Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cee6d4653943dd0…

MALICIOUS

PDF

60.4 KB Created: 2020-12-24 00:54:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d42b72ecd9f6e5ef65c6dd1958657c30 SHA-1: dc8c71af1dafab6753b3f6551fa27dec9b005694 SHA-256: 1cee6d4653943dd027c8750710fc1972405cb5d97e307e7b3ce1fc0e5c5c47b6
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism. One of the embedded URLs, 'https://trafficel.ru/strik?utm_term=mineral+fusion+nail+polish+remover+samples', appears to be a lure for users searching for specific products, likely to direct them to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://trafficel.ru/strik?utm_term=mineral+fusion+nail+polish+remover+samples PDF link annotation
    • https://gowutejuvotebap.weebly.com/uploads/1/3/4/3/134372770/suxevazinifado.pdfIn PDF document text
    • https://pasezarovatif.weebly.com/uploads/1/3/4/8/134858127/dijofudurujevav-zitigolafoxef-sutazemuremagap-fowojenaf.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/godede.pdfIn PDF document text
    • https://xigepeseforala.weebly.com/uploads/1/3/4/5/134508125/nadifubukij_semavabusekobi.pdfIn PDF document text
    • https://tolibopajam.weebly.com/uploads/1/3/4/4/134487495/dexapuwilutejak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445733/normal_5fc62f7f99b61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410206/normal_5fcbf8be583ad.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/95411980-7b02-4cb1-b3e6-ec2f204ee578/81197433436.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/caribbean_cookbook_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/93184472285.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/1605652507.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e2c62f8-5ec1-40db-9e1d-27f18650ce2d/dont_starve_best_character.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/business_english_video_lessons_free.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000adee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADEE 5204 bytes
SHA-256: feabc6329ea4aed9b0a738ba5e95b4a36fdb37db76ddd69749d08f63776bf716
font_01_sfnt_off0000bf8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF8C 10892 bytes
SHA-256: 5d7ce80565e0b0916273ca9cb0d6d156505a270bc773e2a174c42d8f0cca3591

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