Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc650fe7cd3690b0…

MALICIOUS

PDF

33.1 KB Created: 2020-08-04 09:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a98e3f791c8fff1105158bb57278c2d SHA-1: e870e1f22f7a023de7f9ef1242f9f2895125d5aa SHA-256: dc650fe7cd3690b0e11ff7e5a00e2d359f188e8e822e30c677eb7c84966e5e44
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, many of which point to Shopify domains hosting seemingly benign PDF files. However, one critical link redirects to `ttraff.ru`, a known malicious redirector. This suggests the document is designed as a link farm to distribute malicious content or phish users. The ML classifier strongly supports this assessment.

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.ru/pify?keyword=asmaul+husna+pdf+versi+nu In PDF document text
    • http://files.tidingsfromtodd.com/uploads/1/3/1/8/131856326/fabuge_nipowo_rapiwa_mutever.pdfIn PDF document text
    • http://files.antonio-oliveirafilho.com/uploads/1/3/0/7/130776206/zafutib_supuvan_folor_merujoremu.pdfIn PDF document text
    • http://files.myxistore.com/uploads/1/3/0/8/130874253/rekiwojalimegosuf.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/1/0439/1780/3675/files/american_history_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/39701567748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/wunavitalawusuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8333/9678/files/accuracy_and_precision_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6090/4604/files/sentence_fragment_checker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2645/5455/files/12735028309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/furoferupixivegujeburiliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/voicemeeter_banana_crackling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/nasemudokupewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/fox_minecraft_skin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/nuzavugodaluwe.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_off000044da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44DA 5332 bytes
SHA-256: 801be8da3059b15bfdf2396f7130828e9c14c0641806c64cefd0f614e1f8f0ef
font_01_sfnt_off000056d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D4 10104 bytes
SHA-256: 1a42a01d95ae150e8b64ec2602436ed0eeb2efffbc771e127f283a126ff38889

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