Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6dbb9f75d2f141f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-26 01:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b0bad3a1f92f2334e5baffe5a8dfdc1 SHA-1: 10e589381de449ab9e4ebda84d6cc95feb938107 SHA-256: d6dbb9f75d2f141fb03e0e5013e874f276a867319c8d1bf2d8d2070acf8b3705
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains a URL that points to a redirector, and numerous other links were extracted, many of which are hosted on Shopify but likely serve as part of a larger link farm. The primary intent appears to be directing users to potentially harmful external content.

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=gifts+differing+understanding+person In PDF document text
    • http://bodoruwej.johnstownchildcare.com/uploads/1/3/1/4/131438474/fobisoxul_nasalane_befabefiwutumez.pdfIn PDF document text
    • http://files.sheldonlibrary.org/uploads/1/3/2/6/132695294/1107849.pdfIn PDF document text
    • http://wivupafel.fatherbrowning.com/uploads/1/3/1/8/131856331/4826230.pdfIn PDF document text
    • http://fafaludo.mydivinewomb.com/uploads/1/3/1/4/131410227/8417130.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/1/0437/8951/6962/files/ashwamedha_song_w_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/rimabinunodosanol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9779/0366/files/36284222264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/gozudofoxegabov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/rexekivukunemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/scalp_acupuncture_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8271/1201/files/kinusibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/bittorrent_vpn_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4670/6088/files/48640045596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0843/2040/files/kenaparerejuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/4692542583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0416/6297/files/tukix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4572/4055/files/pirates_of_caribbean_full_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/90871766088.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_off00006b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 5208 bytes
SHA-256: 9fd6161c5051e8653ebafbb1d079250f14a2bd159ff3bdfffa3a18efd152618d
font_01_sfnt_off00007cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC1 10024 bytes
SHA-256: ad2b0db91e64b44084bbf2132071d908512cab7c0658c322fae816c72581127d

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