Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71c518e77022baa…

MALICIOUS

PDF

65.5 KB Created: 2020-11-12 13:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9c5a5afb209803f46cc591b2244eab1d SHA-1: bfb0b1d2c67169e9804100b19e8f35bf1a630af1 SHA-256: c71c518e77022baa8763b49715a26ffe708c7d6cf972c702744706cdb924825d
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous external links, including a redirector URL (https://trafffe.ru/aws?utm_term=imagine+dragons+believer+live+mp4) that appears to be part of an SEO link farm designed to distribute malicious content. The presence of many external links, some pointing to S3 buckets and Weebly-hosted PDFs, suggests an attempt to create a broad distribution network for malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/aws?utm_term=imagine+dragons+believer+live+mp4 PDF link annotation
    • https://s3.amazonaws.com/baxekojojexusol/saxajid.pdfIn PDF document text
    • https://lavaseke.weebly.com/uploads/1/3/4/3/134383013/43fdc4.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/722464993.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/jolevuwelaluje.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/xitufani-rokivozimek.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/la_luna_sangre_july_13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5fa1bc9091965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f890be344f9e.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/gizopos.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/fazuwurodarimoma.pdfIn PDF document text
    • https://gazitagoro.weebly.com/uploads/1/3/4/0/134016873/66f59ab6e2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417049/normal_5f9b3a6a33dfd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA772 5504 bytes
SHA-256: a9f7e650c1b5069bfec5501b4ff27eb83c0b7cc2bb691df6684d607f15fd3a92
font_01_sfnt_off0000ba16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA16 9236 bytes
SHA-256: e9664f83b28e8caf36227908ff1473114519126d5e1e0a2c966a1415e29cc97d
font_02_sfnt_off0000d9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D7 18776 bytes
SHA-256: 001d00114279cda904ec87ee5caf81ece5266ef333c342f0ca5ce216f4908131

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