Malicious PDF — malware analysis report

Static analysis result for SHA-256 c138ee821fbe54de…

MALICIOUS

PDF

76.4 KB Created: 2021-02-27 00:49:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 59b4213ca224e7fabe613bc6aa13df0b SHA-1: d6fcf11f05a72ee9b8f1bc6edb820a505ef10efd SHA-256: c138ee821fbe54de480e16a9a5fd636fc515c111533b24f74136769d46b63bae
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to PDF files, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://xezojetit.ru/award?keyword=how+to+use+avon+tissue+oil', is presented as a lure. ClamAV and ML classifiers strongly indicate maliciousness, specifically a phishing or trojan payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xezojetit.ru/award?keyword=how+to+use+avon+tissue+oil PDF link annotation
    • https://cdn.sqhk.co/giganopof/aqLnyjh/73147781648.pdfIn PDF document text
    • http://ravigimojamel.mypressonline.com/whirlpool_duet_sport_dryer_belt_size.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/37366163046.pdfIn PDF document text
    • https://fawurefo.weebly.com/uploads/1/3/4/4/134441885/97294.pdfIn PDF document text
    • https://cdn.sqhk.co/fivodewile/digihSR/jio_keypad_mobile_free_recharge.pdfIn PDF document text
    • https://sadozilodefizon.weebly.com/uploads/1/3/4/6/134659806/polobup.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/igjZZjc/jemedugukinunisitogosivug.pdfIn PDF document text
    • https://lokejefu.weebly.com/uploads/1/3/5/3/135301848/guwubawilafefe.pdfIn PDF document text
    • https://rivelipa.weebly.com/uploads/1/3/5/3/135349188/6800702.pdfIn PDF document text
    • https://wexivupesowapab.weebly.com/uploads/1/3/2/7/132712225/758467.pdfIn PDF document text
    • https://lujajumivovun.weebly.com/uploads/1/3/0/7/130776132/doladow_fisodav_revudipel.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/lijgdfJ/34187590304.pdfIn PDF document text
    • https://dedolodaramolon.weebly.com/uploads/1/3/1/4/131455072/jiretavulikarutelob.pdfIn PDF document text
    • https://cdn.sqhk.co/pujimuxuja/tiaexGe/4371449011.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mizeteb/35822596269.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/shape_and_arrangement_of_bacteria.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/jokoxawewemevesobu.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/amrapali_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/65172332699.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/persona_4_izanagi_fusion_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/wuwutona.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_off0000f127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF127 4696 bytes
SHA-256: ab7a16d7dccd4711e8967ebc193dff119709ae16f5fc7fdb2b8e995a8e6de7ae
font_01_sfnt_off00010147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10147 10208 bytes
SHA-256: 3edac76965bfa102491f296bb08f86d122abe59530c3760e3c0fcb6f8aa58e9c

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