Malicious PDF — malware analysis report

Static analysis result for SHA-256 7894c2d933f26856…

MALICIOUS

PDF

39.4 KB Created: 2020-08-17 03:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f1d3c7416cb5271d75636448c15c2a4 SHA-1: 7809c0306a53c0f267fb57645614377bba10b3a7 SHA-256: 7894c2d933f268561a5306463a741d38e2098dfea6ef864e6d74131236935dd2
162 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.ru/pify?keyword=filezilla+portable++linux`. This redirector likely leads to a malicious payload or phishing page. The ML classifier strongly indicated maliciousness, and the presence of a redirector link suggests an attempt to obfuscate the final malicious destination.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=filezilla+portable++linux In PDF document text
    • http://files.cony.studio/uploads/1/3/1/4/131454306/6609176.pdfIn PDF document text
    • http://files.ocsfortbend.org/uploads/1/3/2/7/132741556/9235882.pdfIn PDF document text
    • http://files.vancourtcustomcabinetry.com/uploads/1/3/1/0/131070849/5909467.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/1/0429/8178/5753/files/dajamodewanufapeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7713/1683/files/addition_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/63466915768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6537/6919/files/2805360759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4498/6280/files/11009411356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/guia_ceneval_psicologia_contestada_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/experience_certificate_for_civil_engineer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/kasivovomifafuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9942/2881/files/labavujawaxumagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/cities_skylines_garbage_piling_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2864/9896/files/misutuzimaloxelanuxatuw.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 4

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_off00005e5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5E 4848 bytes
SHA-256: eafa48889518c9c12d7efa668acac134d95045d3d881e934362d59a9bf64daee
font_01_sfnt_off00006eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEB 9548 bytes
SHA-256: 602f242c2668e42de4bcbe8d3b77c29311cdd7ef8dc47c3ff5793cc3451299e1

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