Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a22ae79dee77453…

MALICIOUS

PDF

77.3 KB Created: 2021-07-05 08:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 1c687db14116dafbb70a0c525968d10a SHA-1: 78788c87002d420d48d8a957c7f90ada7aad8a25 SHA-256: 7a22ae79dee774530e0179542464c453cce027ae383fe1063f24cdf17e19b1dd
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document contains a link farm pointing to compromised WordPress upload storage and other disposable hosting sites, suggesting an attempt to distribute malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely provides instructions to download a password-protected archive, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://allytemp.ru/uplcv?utm_term=generator+rp+and+unlimited+money PDF link annotation
    • http://kimyasaldubeller.com/upload/ckfinder/files/74543053795.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/rizomi.pdfIn PDF document text
    • http://www.alborada.es/ckfinder/userfiles/files/wurodepifololododisotirub.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087c87a2f315---26198197438.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/602c6ee6ce3a086cda22c05cf99b6b33/xomuju.pdfIn PDF document text
    • http://alexanderkanevskyartgallery.com/clientMedia/file/gasulufilebojak.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/cb706ljh64idefoma95fa2d182/gazoraze.pdfIn PDF document text
    • https://diaochue.vn/userfiles/file/gazodibakovuwogozono.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/31c0931e7d7bce39865ac3a710b76c8c/zojigekamikazewiri.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7ec14531b---vobapufudobagumowaki.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7289eea716---gabogedemabapi.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c0837171a37---22794585085.pdfIn PDF document text
    • http://axwelindia.com/uploads/93905675189.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5787dabcd93ab05ea87dd77abf55e28d/befoxewebuko.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bddbf67c845---54821705076.pdfIn PDF document text
    • https://henklinders.nl/henklinders/upload/files/wowomepudupuxexonojalu.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/defuwidonisufizakulifomoj.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f67dace3c4---kenenapa.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/7158122256.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/5aa45f1dfe275151bdc7980d7bb3989b/gazekeritugufudatudago.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086120768dfc---48436899345.pdfIn PDF document text
    • http://seritour.com/rsm/files/31926029096.pdfIn PDF document text
    • http://ahsaipu.com/v15/Upload/file/2021551010399492.pdfIn PDF document text
    • http://citescolairedeledit.com/include/file/62917205215.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b460664c238---sewiwazojifizalasote.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB7 10640 bytes
SHA-256: ed2b6a06245d7bb1b46e50c73fb846bfd02cc17d0260e1a630a1e2f0cbb0a5fc
font_01_sfnt_off0000e702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE702 15904 bytes
SHA-256: d30bf5e08e9c0ba90c04e43d2224d1062f7c48ea1d32ff21323b94277c3dfc3d
font_02_sfnt_off00010f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.