Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c4f3af9d718917…

MALICIOUS

PDF

46.5 KB Created: 2020-08-21 13:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 684addd23a4db2270390c3641ef6e424 SHA-1: abfd2f811ad7f81ce7809e32848c484cdae04e05 SHA-256: e9c4f3af9d7189176b3d760bff688dfd1f7fb6b9b76ddf79e4b17f7b474e59b2
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text fragments related to 'in custody report merced county' and a URL, suggesting a lure. The presence of a PDF link farm heuristic further indicates an attempt to distribute malicious content or phish users. The primary malicious IOC is the redirector URL.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=in+custody+report+merced+county In PDF document text
    • http://puname.bagearoutdoors.com/uploads/1/3/2/7/132740214/vogub.pdfIn PDF document text
    • http://wulim.acumeridians.com/uploads/1/3/1/4/131407405/8a5e2a681b1aadc.pdfIn PDF document text
    • http://files.focusedlearningsolutions.com/uploads/1/3/1/6/131636990/49d8e9.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/1/0431/0840/1316/files/migufodegivokilav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/74398225796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/10997555901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/7835151635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65760981278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/vesafelulanisus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/vegeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4577/2698/files/blue_jacket_manual_24th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/korudotipefudasobon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/fitamivarunogukewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/five_kingdom_classification_system.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_off00006b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B45 5016 bytes
SHA-256: 5ae2d5438ab898677e569a7f4ea5a61ced64d99d0f64c97d5a7bfa56246e476d
font_01_sfnt_off00007c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3C 15956 bytes
SHA-256: b4084e042b93f2e2daa3af8c1b0e5f719076561c4a3f17356a7890384c7a5ff2

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