Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd090c3a14df0dd6…

MALICIOUS

PDF

41.2 KB Created: 2020-08-14 05:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f7be550f51cdf5f2b563e3cf852f4bd SHA-1: c06480a71a9724a1c96a4291ea29559fd5c5a582 SHA-256: fd090c3a14df0dd6c0a423867ac33bbb8ad669f08f65a71a964e5e6805848723
194 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. Additionally, it contains a large number of embedded links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to further malicious 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.cc/wb?keyword=free%20math%20practice%20worksheets%207th%20grade In PDF document text
    • http://zikane.missnationalbeauty.com/uploads/1/3/1/3/131398455/8a6eaf956b05cd4.pdfIn PDF document text
    • http://tifaw.upperskagitlibraryfoundation.org/uploads/1/3/1/4/131482976/1235173.pdfIn PDF document text
    • http://files.auerservis.com/uploads/1/3/1/4/131453124/vitiliwo.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/1/0434/5105/6295/files/baby_boomers_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8209/6541/files/almasry_alyoum_newspaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/xolusanus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8689/5522/files/o_level_african_history_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5651/0616/files/13282806640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/kipupuwopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/911721254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5622/files/systems_of_equations_word_problems_worksheet_algebra_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/3523016366.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 2

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_off00006125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 5648 bytes
SHA-256: 0617b0234ac3d86b018030cfff1df6e7486c996c3acd77c9ad16abbb98f4a6de
font_01_sfnt_off00007444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7444 10292 bytes
SHA-256: 6df4c9081fb13e1d23c8963553bf6256b9c99c74afda3b4a4f0efec67cdf9961

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