Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bf1bb5f8943a1a…

MALICIOUS

PDF

77.7 KB Created: 2021-03-14 09:26:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: aba202ad51bac407f68385c5635dc82f SHA-1: cce30894b6c4fd9c2142219609873c775578ea7d SHA-256: 80bf1bb5f8943a1a207085f7a2b33563d90c2da050796e01b31176b780fa233c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/wix?keyword=fleck+5600+filter+valve+manual PDF link annotation
    • http://nextauto02.ru/32965777990i3ldq.pdfIn PDF document text
    • https://tarutugiwom.weebly.com/uploads/1/3/5/3/135326066/a4dbf42025f6b.pdfIn PDF document text
    • http://fitit.space/48914561752fyitx.pdfIn PDF document text
    • http://outputqwvk.space/2847640860g7fsp.pdfIn PDF document text
    • https://fineruliji.weebly.com/uploads/1/3/4/3/134313455/nalolotif.pdfIn PDF document text
    • http://allieshouseofhope.com/347713250458llvy.pdfIn PDF document text
    • http://mugedly.xyz/53458594653ivqpy.pdfIn PDF document text
    • https://liwotagavujid.weebly.com/uploads/1/3/5/9/135961529/463d927.pdfIn PDF document text
    • https://nezubarenegutel.weebly.com/uploads/1/3/0/7/130776328/7b200fe975ccbcf.pdfIn PDF document text
    • http://believes.space/descargar_libro_pon_el_cielo_a_trabajarp6u0v.pdfIn PDF document text
    • http://uscovidcharts.com/sixipewopimeferuduzawon68xzh.pdfIn PDF document text
    • http://solapp.xyz/subunififulgz93.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/zutug.pdfIn PDF document text
    • https://xinefozi.weebly.com/uploads/1/3/0/7/130775465/boxumosoxinusal.pdfIn PDF document text
    • http://springtea.space/50161117508051bl.pdfIn PDF document text
    • http://hot-money.fun/the_company_of_wolves_full_movie_englishihcjv.pdfIn PDF document text
    • http://wurilozi.scienceontheweb.net/best_strength_training_workouts_for_fat_loss.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8395722-5bc2-46aa-9d69-349333d4a167/probabilidad_y_estadistica_para_bachillerato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33aa8bc1-1ec6-4a59-a181-04803d901d16/97810933656.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/zotokimibas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ff58f58-a1ea-4a08-bfc8-544806feb799/canon_repair_code_b203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e80bee5-1591-4b38-b04c-76d4276b6d82/pedanimolamidura.pdfIn PDF document text
    • http://gumomexad.onlinewebshop.net/first_90_days_action_plan_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04a9d5ef-d2f6-40fc-b603-59877bbd45a4/tomimumujexu.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/jedifewipewakafosujufo.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF318 5348 bytes
SHA-256: e074a46e5dbcc0e2dbed9fe5b6305cf59129957203ae55f90023bf8dd895b88e
font_01_sfnt_off0001054b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054B 10472 bytes
SHA-256: 34b123d57bc730b3f7e9e900f25acd825ccba98943b6e3fe28971c1299cf969c

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