Malicious PDF — malware analysis report

Static analysis result for SHA-256 7161b41d6fa96f5a…

MALICIOUS

PDF

48.5 KB Created: 2020-08-04 00:08:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5039b902e3da224849df980f9a9debe3 SHA-1: fad8faa84d909de40c97beea32e14936dd853d79 SHA-256: 7161b41d6fa96f5a75bb36dbd6d322ce6a8e15bf6ddfe252e5fb4fab31007782
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.ru/pify?keyword=behavioral+design+patterns+pdf`, which is flagged as malicious. This indicates a phishing or scam attempt, likely to deliver a secondary payload or redirect to a malicious site. The ML classifier strongly supports the malicious verdict.

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=behavioral+design+patterns+pdf In PDF document text
    • http://tezek.vetwoundlibrary.com/uploads/1/3/1/4/131454106/fulexekudipikot_miwelikedivi_losuwejisovopu_fofig.pdfIn PDF document text
    • http://files.mashamsteamrally.com/uploads/1/3/1/4/131437750/vifigagugexafena.pdfIn PDF document text
    • http://files.shelleyartwork.com/uploads/1/3/0/7/130776728/vapafilido.pdfIn PDF document text
    • http://files.arcadecoffee2go.com/uploads/1/3/0/7/130740483/4292509.pdfIn PDF document text
    • http://files.purpletigergonewild.com/uploads/1/3/0/7/130775429/1631509.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/60343251022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/18118140337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/52740670161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4940/files/36955245604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/20391736987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/24922276585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0014/3777/files/biwenajara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/gebixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2862/8135/files/digimon_world_digivolution_guide.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A04 5200 bytes
SHA-256: aa03a40c38df624abe74c1fbce6af49ba2b7ae2a5be272ef7789b3b4987629a9
font_01_sfnt_off00007bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB5 13824 bytes
SHA-256: 33ec36cabc44c225485f973deda0a57fdd288baae1aa7fe60844d6568fcfe376
font_02_sfnt_off0000a6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D4 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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