Malicious PDF — malware analysis report

Static analysis result for SHA-256 34053515e264ccde…

MALICIOUS

PDF

87.9 KB Created: 2021-07-08 08:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: ce4c4cdcc873e3b43d33a5d733679474 SHA-1: ba9f8c7ef0a8c50e94a739d9911fc45660031915 SHA-256: 34053515e264ccde8b4d2633c7f80908d0a90dbf80799376246925a189e671e7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised websites, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves exploiting user trust through deceptive links, likely leading to malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cructi.ru/uplcv?utm_term=yowhatsapp+download+2020+free+download+for+android PDF link annotation
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/042e008a5bd40ba68492e57f4e6a78ec/50550170925.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/020llq42iiop9mf8n7soknp7b6/disadevipapotu.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/f1f17fdbcd838622de9a639e51f979f2/66926652002.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/5r84b2n9pa0dfprg6vmobaivl7/jupeninovaga.pdfIn PDF document text
    • https://tonitomov.com/picture/file/40899546759.pdfIn PDF document text
    • http://wtmongolia.com/materials/file/dapubigakinek.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/48192259032.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bff17c1986d---46775626107.pdfIn PDF document text
    • http://reinforcingourheritage.com/clients/0/08/0860c2a235168fe7e4a745c824023bdd/File/24390915667.pdfIn PDF document text
    • https://kawanmto.info/contents//files/24624040792.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/5dkugi4pvemg52co02enibbe8r/50667689308.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d22cac8cea6---rerowowizoxisitox.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608263609edd7---10904258598.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a4af648bac1---muwedewenajuregowiz.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/3940e1256d8c7d2d021781dc7c3d51c2/62853785621.pdfIn PDF document text
    • https://didacostruzioni.it/userfiles/file/zowaduzaruvavikiw.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b09d9f01233---21866656542.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/efc3b1de673afd8a290fa7fe01f0ee80/50357143432.pdfIn PDF document text
    • http://geose.ru/userfiles/file/gopizapexejoguj.pdfIn PDF document text
    • http://nfc.soo.jp/file/jekenapevemibomixez.pdfIn PDF document text
    • https://likeevent.it/writable/public/userfiles/file/gigixeniposufofat.pdfIn PDF document text
    • http://darec.sk/files/files/derabi.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/xoxunamagipafopimesejudev.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0D 10904 bytes
SHA-256: e6ea3705e588c26c332bfeacf10e6ae43d50e37003871c6cf7e86a3efb2ea793
font_02_sfnt_off0001274e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1274E 16580 bytes
SHA-256: f59fbb666c7f2d8d3a9c1c0bdd8f1561a216bd2dc3448979336fbefb69ed0646

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