Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c7a52ab5a92516c…

MALICIOUS

PDF

44.5 KB Created: 2020-08-06 23:24:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75858193a31989bfdb3c67863758142e SHA-1: ba06602d30260e866d5133f0fd929b0502cd2cac SHA-256: 9c7a52ab5a92516cbf9f49937512ff6e6dacff772b07f12c589b12590c9be941
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One prominent link, however, directs to a malicious redirector at 'ttraff.ru' which is disguised as an essay on mobile phone advantages and disadvantages. This suggests a social engineering tactic to drive traffic to malicious infrastructure.

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=advantages+and+disadvantages+of+mobile+phone+essay+pdf In PDF document text
    • http://files.osspto.org/uploads/1/3/2/8/132815748/migujinegu.pdfIn PDF document text
    • http://simij.blacksheepsalonfl.com/uploads/1/3/0/8/130813054/abacf980675e.pdfIn PDF document text
    • http://files.callowaychurch.org/uploads/1/3/1/3/131380288/523261.pdfIn PDF document text
    • http://files.brunswickelections.com/uploads/1/3/0/7/130740148/kapom.pdfIn PDF document text
    • http://fasevesiv.ancientartisanredoaksaltlamp.com/uploads/1/3/0/7/130739718/0be6ad259b0.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/1/0436/3098/5376/files/funimowulawoxezusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99913566500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/genodabiboferesalowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9915/9718/files/jetemog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3630/3782/files/bujuxabujirope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/71742133141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/ultimate_combat_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/lokale_und_temporale_prpositionen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6960/2981/files/sijikorawito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7258/5881/files/56769429480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/15029787575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/mutual_indemnification_clause.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD6 5652 bytes
SHA-256: 7caeebfe63cd79595984a8ff6f0743c71b5993e5d9f76bc4c3a7683258a1a1ca
font_01_sfnt_off00008000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 10648 bytes
SHA-256: abcf94daa1a4c191e22152651fe6f95d97ebdef1fead4afd4fc6a08319fbf498

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