Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92b276e02e20e24…

MALICIOUS

PDF

42.2 KB Created: 2020-08-20 12:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0422d5a2b55cd622a2f8fe7685a9a0ad SHA-1: 19d5119835f4ca9413b45fd9a584a1ce5d5001c1 SHA-256: d92b276e02e20e246a10990dbbce8343828f5da66ecfcff630ff1b1883a2424d
234 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a software database, and the presence of a password archive lure heuristic suggests the document is intended to trick the user into downloading a password-protected malicious archive. The primary malicious URL is https://ttraff.cc/pify?keyword=chessbase+mega+database+2018, which is a known malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ttraff.cc/pify?keyword=chessbase+mega+database+2018 In PDF document text
    • http://files.johnrichardsonimages.com/uploads/1/3/0/8/130874124/eef5da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/werozetamixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4693/6482/files/tugibubumalug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/vuzox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1210/6912/files/basketball_score_sheet_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8774/8519/files/i_kissed_a_girl_jill_sobule_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/fabukepejeridavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/64290677811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/20629054661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/autentico_spanish_2_textbook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0721/2709/files/environmental_impact_assessment_project_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1612/5590/files/magototadiresusifakilir.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 2

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_off00005d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D54 5676 bytes
SHA-256: e03f188fe627e0d43bb51b38a51e28affb75a5a5e9ac870feaedda95d605d7f2
font_01_sfnt_off0000707b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707B 14076 bytes
SHA-256: de8938c41b07f21e53c979d16c08a0b62c99b431243613d06c92ecad470075ac

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