Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c9d08280ef3834…

MALICIOUS

PDF

37.1 KB Created: 2020-08-04 19:37:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da4b0a82e0d0de5af9bdd2ebc8f526bc SHA-1: af63068d4bd58badbea855e4ca856c0a310f3d35 SHA-256: 52c9d08280ef38344b3813b4886643180ee48edfdbfed9454490f0e7e7aaa0f9
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.cc/pify?keyword=easy+alto+sax+sheet+music+pdf', which is likely used to redirect users to malicious sites. The presence of a large link farm further supports the attack pattern of SEO poisoning or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=easy+alto+sax+sheet+music+pdf In PDF document text
    • http://fenitapes.walnutstchurchofchrist.com/uploads/1/3/2/6/132681504/1967201.pdfIn PDF document text
    • http://files.7thgradescienceworld.com/uploads/1/3/0/8/130813144/kagawan.pdfIn PDF document text
    • http://files.barbershillyouthsoccer.org/uploads/1/3/1/4/131438460/kozebukuvu.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/1/0430/4008/0021/files/zobepabededikuwuful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/59673859636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/lidumuvomiwaxalagazuxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/10329190183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/kifuwufolererufedonag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6195/3191/files/sidezatuxopedibimonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/makogerifegovubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6420/4193/files/30794550199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3696/5029/files/sonotube_concrete_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0939/1261/files/buletumemoziwibatekaledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/zixatumemiwipenejip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/hyster_forklift_manual_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

Related samples 5

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_off0000538f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x538F 5424 bytes
SHA-256: d8e31c655076760c83a5f2a3328008011529045f44d8966aec63e3c3e771de8e
font_01_sfnt_off000065ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EF 9880 bytes
SHA-256: 7dd3523a9d487ce9224b072ca7bce67d0f42747ea152e1494a1061c713c1c326

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