Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d06dbaaccf2ef0…

MALICIOUS

PDF

36.6 KB Created: 2020-08-23 12:21:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 156c085d3f7e97982c484da77a2dadfe SHA-1: 8a51901b0b0206a4d53ae2b2b86c47502a9de304 SHA-256: 91d06dbaaccf2ef08a90eeb7073b703cb29498d204292c2f38ce829c54503612
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a large number of external links, suggesting a link farm. The document body and heuristics point towards a payment redirection or callback phishing lure, aiming to trick users into fraudulent transactions or providing sensitive information. The primary malicious IOC is the redirector URL: https://ttraff.com/pify?keyword=chapter+35+benefits+direct+deposit+form.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=chapter+35+benefits+direct+deposit+form In PDF document text
    • http://files.tampasystema.com/uploads/1/3/2/6/132695418/6b4ece88.pdfIn PDF document text
    • http://files.besedin.org/uploads/1/3/1/4/131437276/6071c2ec86.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/1/0427/6623/7852/files/5579793948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6708/8800/files/japixufodusevinepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/bigo_live_app_latest_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1506/1153/files/73324588346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/32102083324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8790/5446/files/53968686070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58580374151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/47034606449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/numeros_romanos_del_1_al_200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6207/3246/files/pidezasore.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_off000050c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50C3 5696 bytes
SHA-256: e4694c8d58cb7f3ff0c03e16f2cedea993458bc845d929bbe2b288dc9214532b
font_01_sfnt_off000063eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EB 9840 bytes
SHA-256: cdb6f4d65759d72ffc47cb921163bc945f46d69b29721d094dca7cb052fbbdc8

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