Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7054ce32152e578…

MALICIOUS

PDF

43.4 KB Created: 2020-08-11 22:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 061ecfcd3863efb835f88b85bb19d6a1 SHA-1: b7378c81efbe6ef622394a7997a8474f94407ec5 SHA-256: c7054ce32152e5785405c8e9480e589bb530f35d03c2324cb549256c35ebc37c
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a free download for interview questions, but it redirects to malicious infrastructure. The primary link, 'https://ttraff.ru/pify?keyword=common+interview+questions+and+answers+pdf+free+download', is flagged as a malicious redirector. The document body and embedded links further support the SEO-based link farm tactic.

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=common+interview+questions+and+answers+pdf+free+download In PDF document text
    • http://files.melissaelayne.com/uploads/1/3/1/3/131381720/8a4267178.pdfIn PDF document text
    • http://puxedi.avg-ipms.org/uploads/1/3/0/8/130813612/nosadapijimobegizel.pdfIn PDF document text
    • http://files.rowanfirstyearwriting.com/uploads/1/3/0/7/130775350/7750949.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/1/0433/4492/0734/files/zinuvomadimugexoboxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4096/3750/files/popejupitosinoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/101_anti_aging_foods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4334/8892/files/16260341139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/jakixujapiwibezuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0052/8033/files/tonazuvekapukife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0993/2439/files/lekerogarexorarewil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/15726786676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5283/4717/files/povasabexinixemabulelatur.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 5372 bytes
SHA-256: d2051933a9221830512014311a43b9d5f64af57d73781c3e6f838ff108fa6543
font_01_sfnt_off00007ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDD 10140 bytes
SHA-256: 47675005b1dd030dd5dd3b122e0bc7c2ccdaaabc108d3f4591881f6e9494a47e