Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b8af76b0560b5b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-12 08:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa1d0aa02f0ccc2bc4a03f460de9d594 SHA-1: 32b62bec126c895d1cd21d1a6a4c5c442f5b4219 SHA-256: a9b8af76b0560b5bf68a7414917418f8f6bacef52f17b1cce30e6373cdfd112f
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=broiler+production+manual+pdf'. This suggests the document is part of an SEO link farm or phishing campaign, aiming to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=broiler+production+manual+pdf In PDF document text
    • http://files.omgirl2013.net/uploads/1/3/2/6/132681504/4355807aeac.pdfIn PDF document text
    • http://files.ncappartnership.org/uploads/1/3/0/7/130775151/3966640.pdfIn PDF document text
    • http://wutajiz.good-neighbors.org/uploads/1/3/1/4/131453133/7546928.pdfIn PDF document text
    • http://files.lumisworks.com/uploads/1/3/0/7/130775265/ropokoresibefijo.pdfIn PDF document text
    • http://files.innerjourneycanada.com/uploads/1/3/0/8/130813524/6eb5a836e19.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/1/0429/5314/6517/files/evermotion_archinteriors_vol_39.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0509/9675/files/83020506933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/woxigus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/9608916104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5380/0859/files/gavabalologokasipatusel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5900/9943/files/10378393980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/vurufikevolinomukajosida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/singer_merritt_2404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/emergency_endodontic_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/how_to_use_digital_multimeter_dt9205a.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_off00006193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6193 5172 bytes
SHA-256: 2cce1dc8a45f87fa117e1cf3c90afd2dca5e701101bc99c8b4faca576a118910
font_01_sfnt_off0000730e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730E 10376 bytes
SHA-256: dbe67795d9f52345e35a3ef8fb776ac2db5abd1d19f485e0f157f10cb15902cd

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