Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a81859a7b1f9d9f…

MALICIOUS

PDF

40.4 KB Created: 2020-08-21 15:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f26bfb2a72cb4d5710cd5c8052d98d9 SHA-1: 6bd469eff06308c7ff39d1eca2cda3e6c4637994 SHA-256: 0a81859a7b1f9d9f36715b50a77015abfeeaad43d7fc767bb140f0dca1332830
194 Risk Score

Malware Insights

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

The PDF contains a deceptive lure, presenting itself as a 'Gettysburg address worksheet answer key' to encourage users to click embedded links. These links lead to a link farm hosted on 'ttraff.ru', which is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to manipulate search engine results and direct users to potentially harmful 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.ru/pify?keyword=gettysburg+address+worksheet+answer+key In PDF document text
    • http://files.horvathspecialtyauto.com/uploads/1/3/1/4/131437683/6562346.pdfIn PDF document text
    • http://files.aplcnj.org/uploads/1/3/1/4/131453109/9267268.pdfIn PDF document text
    • http://files.labradoodlesvermont.com/uploads/1/3/0/8/130873732/zetosoxifomebigidol.pdfIn PDF document text
    • http://gunetoz.exorcismdetailing.com/uploads/1/3/1/4/131453433/133e7364.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/1/0428/9432/7961/files/altivar_312_manual_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2726/5693/files/39552058840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6663/6953/files/62256530586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2632/5409/files/66024640731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/derapigasino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/41713223923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/30714417997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/overhead_allocation_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2066/2422/files/52705983111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9313/6294/files/jellicle_cats_lyrics.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 6

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_off00005ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED9 5484 bytes
SHA-256: 8b4683047bc7c7b843a4b49c435fe64b18535c4b29ed33e2449b6cae82202905
font_01_sfnt_off0000718d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718D 10384 bytes
SHA-256: 1b0ea533770723fd507db35b6179e43d1883bf7136614e24d2586eb0526f3e77

Open this report in the interactive analyzer, or submit your own file for analysis.