Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d8938f94d1d6e11…

MALICIOUS

PDF

37.3 KB Created: 2020-08-01 12:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26f8ddf96a80e2b3beaace4757d25828 SHA-1: df9d4d40be56385b188463435e3ba24874f45113 SHA-256: 9d8938f94d1d6e11e0508384c335601d697f5841f4d5f8c25606a4695bff6fb5
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and references a 'celebrate recovery participant guide', suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility. The ML classifier strongly indicated maliciousness.

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.com/pify?keyword=celebrate+recovery+participant+guide+1+pdf In PDF document text
    • http://files.pederistad.no/uploads/1/3/1/4/131453610/kaloz.pdfIn PDF document text
    • http://files.lolafrost.net/uploads/1/3/1/4/131437516/nivemojoxidakuf.pdfIn PDF document text
    • http://files.yoursunshineyoga.com/uploads/1/3/0/7/130775328/45da1e773b746.pdfIn PDF document text
    • http://files.chardoncommunityactionteam.org/uploads/1/3/1/3/131384018/pugotut-newifuniz.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/1/0429/2529/3724/files/94071635975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/ranupamojexoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/dofigufeneduwulowebuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/vuravaxog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/29101568178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/78457588684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4416/5016/files/62805771336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/zasowexujunazojilufepajob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/43849277197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/gasidupabewalekux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/7023727321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/jimun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0785/2192/files/dabajisogoxun.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 8

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_off00005326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5326 5404 bytes
SHA-256: cfe980f7e99043b23772f16dc6429337705ea6dfda5d6eee5c36815e9a0e5b85
font_01_sfnt_off000065a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A3 10068 bytes
SHA-256: f3826d671435ec46dc8a2625425292111604057dd1c97c841011d6c850064344

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