Malicious PDF — malware analysis report

Static analysis result for SHA-256 670fc5b4d9713008…

MALICIOUS

PDF

40.2 KB Created: 2020-08-17 15:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db8dc5e9893e5472214ae342a999a2b8 SHA-1: d033b1f86e32cc497386b842a455c2904242175f SHA-256: 670fc5b4d97130082be916cbd187218cce8063937247c6a800b11684bcb46e85
202 Risk Score

Malware Insights

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

This PDF document contains numerous links, many pointing to a redirector infrastructure associated with malicious activity. The document body, though heavily obfuscated, contains URLs that appear to be part of an SEO link farm designed to lure users. The primary malicious URL identified is https://ttraff.ru/pify?keyword=brinno+construction+camera+manual, which is flagged as a known malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=brinno+construction+camera+manual In PDF document text
    • http://files.quitecontrarybymary.com/uploads/1/3/1/4/131437676/89861214e1ac.pdfIn PDF document text
    • http://wogifaka.aubreesbullmastiffs.com/uploads/1/3/0/7/130775386/f70dc278234.pdfIn PDF document text
    • http://files.ladygangmusic.com/uploads/1/3/1/3/131383772/2848f66c8.pdfIn PDF document text
    • http://files.saintbrendans-online.com/uploads/1/3/1/4/131454286/xurixitiwo-morasidurexibo-dubedi.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/1/0429/6481/1935/files/76148192747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/dragon_quest_characters_torneko_no_daibken_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1691/1010/files/ropigodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6637/files/sawed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5021/2264/files/caterpillar_generator_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/minecraft_house_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/lamopuxerageluxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/zunojogudisobodujupajusar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/kanugesopijederori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/98322123221.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 2

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_off00006196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 4996 bytes
SHA-256: 269a84e16e59c9125150fb8cb6dc75ba6305a22628976ae76d1e9329b06361d5
font_01_sfnt_off0000726f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726F 9852 bytes
SHA-256: 0a2c9022cb5abe4283b581bffea1b665aa6bd87e690b32e5db846f0e2b780c4a

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