Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8a016dc29edee5…

MALICIOUS

PDF

42.1 KB Created: 2020-08-14 06:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4f5dd8cc89a0287629599ef017ce56f SHA-1: bf4be5fb1fc273904456428d17e46f9b30ced25e SHA-256: 7c8a016dc29edee576f03bc0f7a5c577e24810560a176562d382baaf3589441a
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to create an SEO link farm, directing users to a redirector URL. The primary redirector URL is https://ttraff.ru/pify?keyword=retail+assessment+test+questions+and+answers+pdf, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting a phishing or scam attempt.

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=retail+assessment+test+questions+and+answers+pdf In PDF document text
    • http://files.rltfarms.com/uploads/1/3/1/1/131164383/c699b.pdfIn PDF document text
    • http://files.inkandscribbles.co.uk/uploads/1/3/0/8/130813796/zidij_pinenejomegax_totex.pdfIn PDF document text
    • http://duzag.lhschoolsupplies.com/uploads/1/3/1/4/131437987/ae88670829df.pdfIn PDF document text
    • http://files.stockela.com/uploads/1/3/1/6/131636995/23795661d4.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/1/0431/0004/5469/files/52910947079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6160/4505/files/wumuxazoleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96328102714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4393/0791/files/busobagufejekonotarelune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bumagigefabap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4167/5685/files/8736417281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/73437163407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7958/1352/files/zavedoxoxunigovoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8412/0225/files/adobe_premiere_pro_cs4_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9940/5977/files/spy_pen_camera_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/selarovofevojepaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/endnote_format_author_names.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_off000065b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B6 5412 bytes
SHA-256: 34536e2d553031d5c7ef2fbd31835a2a6a16effc84e84cb3065643dde86cce82
font_01_sfnt_off00007811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7811 10148 bytes
SHA-256: f50e456ff78917bbb9aff379f14e5ac7541410f835334615e06a40a07bc7160b

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