Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dcb187dcb98486f…

MALICIOUS

PDF

47.3 KB Created: 2020-08-03 01:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9085248190621f7a7fd6b17c322845d SHA-1: 659370ccd80b7bde1bc4c9f0de75c517478f074e SHA-256: 8dcb187dcb98486f2622d075eb8137d2419f92851fe336776a432c179aaeea3b
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL is a redirector, suggesting a multi-stage attack. The document body contains obfuscated text and multiple URLs, including the malicious redirector and numerous benign-looking links hosted on Shopify, likely part of the link farm.

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=qimila+net%252F+youtube In PDF document text
    • http://files.pearlrivernaz.com/uploads/1/3/1/8/131856247/nunorozugug.pdfIn PDF document text
    • http://files.pearldeangarden.com/uploads/1/3/0/9/130969746/1909179.pdfIn PDF document text
    • http://files.netarrant.org/uploads/1/3/1/0/131070866/daa1ab208997.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/vesepoxobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6385/9610/files/mass_rmv_accident_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/45269109632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7053/5318/files/753805626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5340/files/90246737755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/20974176549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5455/0440/files/hot_body_competition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/jekinumaratisemofiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/jedebarinegezezewemupamez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/53542211728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/27145149242.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 7

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_off0000700f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700F 4776 bytes
SHA-256: b91fa4589573968a90fd74a47d45c068cba467c5ff6a5653c026f5ea5c46a15c
font_01_sfnt_off0000803e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803E 10044 bytes
SHA-256: 66b4771682618aff3527eb58a83631510a19bf04966c31d85c51755debc5fee0
font_02_sfnt_off0000a299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA299 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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