Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae9e2fe84fbc4b8…

MALICIOUS

PDF

80.0 KB Created: 2021-09-01 03:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d0004cdf3bc27fadc22ef38fb63efe71 SHA-1: fc7de18c9c898ebca2fb0dc49cdc3a047cfcda83 SHA-256: 2ae9e2fe84fbc4b85f9d9a5bc223d225499aefefd269f5dad4c7ef4eebc02f0e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to direct users to potentially malicious websites, disguised as a download for pirated content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://advance-pack.com/editor_upload/file/12048683243.pdf In PDF document text
    • https://zbmbudomont.pl/userfiles/file/nesojubokofabotetu.pdfIn PDF document text
    • http://sarlampa.ru/upload_picture/kexologapuzigepom.pdfIn PDF document text
    • http://fields-on-earth.com/27069184577.pdfIn PDF document text
    • http://stratford1980.com/clients/1/19/19838be1bbe5684469623718d5e25b5d/File/95729054380.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e245fc45d0---laxeruxipejuvegewo.pdfIn PDF document text
    • https://aravlicraft.com/cmsCart//upload/file/xigajefixedoxudowuz.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c1975eaf2---69179704179.pdfIn PDF document text
    • http://lamachine.nl/userfiles/file/13564115625.pdfIn PDF document text
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/b5rub0lho5gvh0sr7df6sop7ig/judezasogifolenapubomupo.pdfIn PDF document text
    • http://railwaysrailroads.com/upload_files/files/ferewudazavejobig.pdfIn PDF document text
    • http://www.asslar.de/downloads/11605152772.pdfIn PDF document text
    • http://investin-khj.ir/ckfinder/userfiles/files/90066781693.pdfIn PDF document text
    • http://immobilieninvestors.eu/userfiles/file/gigikofig.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/561112960609c8db3407b4.pdfIn PDF document text
    • http://africa-emergence2019.com/userfiles/file/81519482422.pdfIn PDF document text
    • https://adikkeempat.com/contents//files/85753244969.pdfIn PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/c07i88uhie41n8bn7k732gt7c7/34358389787.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/xiferanowuvajiwamazuko.pdfIn PDF document text
    • https://fallsplat.se/file/79384406555.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/4b96473ea3fa4df8c3461a2d6faeba00/jikopasiruregaxide.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/920779116f288487a783fc7ea7135085/97636859909.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16118a4ecbaa88---68042778422.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16125cfd86a4e9---wegigaxajegarese.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=pirates+of+the+caribbean+part+1+full+movie+download+in+teluguPDF link annotation
    • 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_off0000cd36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD36 11512 bytes
SHA-256: 1f82e92ee74769cbb7f1bc3fa76f009ba8296f3a5c1f5d8f3b9ff27bb5be633c
font_01_sfnt_off0000e7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F2 18624 bytes
SHA-256: fd936ed35ab7f1dddfa1846f9fe3d71f10450464a72d0461e015e7adb3e69811
font_02_sfnt_off0001188a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1