Malicious PDF — malware analysis report

Static analysis result for SHA-256 1154dabc8b836ade…

MALICIOUS

PDF

96.6 KB Created: 2020-07-31 10:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f88a58fa8bbdcba78ace4778871df63 SHA-1: 906d6e84dcd3f7b12af6cd74a0479df3f939a399 SHA-256: 1154dabc8b836adea489f7fdca9eedba6190e2bd0476ce5d534c5ffff61e14c8
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector URL (ttraff.ru). This suggests a tactic to obscure the final destination and potentially engage in SEO spam or phishing. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of a malicious intent, likely to lead the user to a compromised site or phishing page.

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=vertical+turret+lathe+machine+pdf In PDF document text
    • http://files.thepaperbackblog.com/uploads/1/3/0/8/130814390/tazid.pdfIn PDF document text
    • http://files.mogosoapemporium.com/uploads/1/3/1/3/131398242/xikoribela_pazinifoxufon.pdfIn PDF document text
    • http://files.sunrisechiropracticcenter.net/uploads/1/3/0/8/130814100/3467563.pdfIn PDF document text
    • http://files.wardlawspoultryfarm.com/uploads/1/3/1/1/131164009/mivika-muzos-wokujonasenasi.pdfIn PDF document text
    • http://files.danielspiro.com/uploads/1/3/2/6/132682048/jazogubikikivi-ludifuvugikudex-vifiwuba.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/1/0430/8277/6725/files/35849638244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6121/3344/files/bejifosisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0333/7115/files/37043140351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/juzonife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/94863065836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0455/7472/files/sobizajulonuzugawuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34515707504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/96704371862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/1597553348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/nifukolibopofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/74473424165.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_off00013a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A6A 4952 bytes
SHA-256: f4e80ecc70a24341f12f2bbc38b5f0559b684ee531120625d4be7c532b6dd488
font_01_sfnt_off00014b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B12 13104 bytes
SHA-256: 8529a2bff9a66ae0068fe61ab47b46dffd471b3a0cb1db03e339fd1e21b9e03e

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