Malicious PDF — malware analysis report

Static analysis result for SHA-256 564ba5e592624bc8…

MALICIOUS

PDF

81.3 KB Created: 2021-09-11 08:01:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 731cd179dcc161e5bb9c106e5da4be3e SHA-1: 6ee2b685c0a5a536f47e878644a966e06c239c8e SHA-256: 564ba5e592624bc8af124d9edd3205e1badba83603ce797c3f4724b96b4191dc
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external links, many of which point to compromised WordPress upload directories or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://huntic.ru/uplcv?utm_term=sync+outlook+signature+to+android PDF link annotation
    • http://nattuvaartha.com/assets/ckfinder/core/connector/php/uploads/files/49033302406.pdfIn PDF document text
    • http://khangvietdn.com/uploads/file/velamebovisoxuviwupanavo.pdfIn PDF document text
    • http://www.morrisjones.co.uk/EditorImages/file/4871635984.pdfIn PDF document text
    • http://nhactheducthammy.com/upload/files/50960332189.pdfIn PDF document text
    • https://pfollowers.com/ci/userfiles/files/72334891903.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/0303b87b851f6af938e3173be14ed08a/puduxu.pdfIn PDF document text
    • http://elijasprojekts.lv/files/file/14594258441.pdfIn PDF document text
    • https://vaynhanh365.net/contents/files/xadidivavaxalufomi.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/uh22h8f0bia16m9rreqrt56rp5/85928341286.pdfIn PDF document text
    • http://careerpathrecruitment.com/swapscan/app/webroot/js/ckfinder/userfiles/files/kavalofumanemeb.pdfIn PDF document text
    • http://gitishahjahanpur.org/ckfinder/userfiles/files/dugavigugebegafogudujof.pdfIn PDF document text
    • http://studioarchterreni.it/userfiles/files/93076462465.pdfIn PDF document text
    • http://hyeminshop.com/DATA/files/47847317371.pdfIn PDF document text
    • http://nhungbaithuocnam.com/img-tvdl/files/13544873194.pdfIn PDF document text
    • http://ubestsports.com/imager/files/20210911084248.pdfIn PDF document text
    • https://nitdgp.ac.in/uploads/userfiles/files/bixivexibedezasaporazinun.pdfIn PDF document text
    • https://galerieportelouise.be/userfiles/files/dexuvibipatesi.pdfIn PDF document text
    • https://noursportevents.com/wheelmarine/userfiles/file/67637398664.pdfIn PDF document text
    • https://www.edmcenter.xyz/ckfinder/userfiles/files/13072796175.pdfIn PDF document text
    • http://ndc-group.ru/uploads/files/zixunijisiwu.pdfIn PDF document text
    • http://emiem.pl/public/upload/ckfinder/userfiles/files/litimalosesakasofix.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/volutupajija.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161394e2c245fd---gegebegel.pdfIn PDF document text
    • http://loscogliodifavignana.it/userfiles/files/nanives.pdfIn PDF document text
    • https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/boserev.pdfIn PDF document text
    • http://nepodoshlo.kz/ckfinder/userfiles/files/4812351111.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_off0000d99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99A 10928 bytes
SHA-256: 2356b2b5e84b7e6f73872738cfe804f27fbabc7f160b8df3343a55275d9a588e
font_01_sfnt_off0000f2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DA 17412 bytes
SHA-256: ed280a4b4cdef0d1b4d3014389a3a20e903ef2dd285fe0d59e59e82cf51184f1
font_02_sfnt_off00011f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F87 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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