Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4effd812c9048ca…

MALICIOUS

PDF

47.8 KB Created: 2020-08-18 22:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7befbd1de489fd1018f44c70200c2972 SHA-1: 27f44b20e3be34cb50120e7aef01fd581257e13d SHA-256: d4effd812c9048ca535a03124c05144126b41324e278dd849e3657eb2b09d5c1
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, includes this URL and numerous other PDF links, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.com/pify?keyword=brandenburger+nalebuff+coopetition+pdf, which is likely used to redirect the user to a malicious site. No scripts were extracted from this sample.

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.com/pify?keyword=brandenburger+nalebuff+coopetition+pdf In PDF document text
    • http://rovutopen.poorwarren.com/uploads/1/3/1/4/131437689/4fc343.pdfIn PDF document text
    • http://files.asadeltanu.org/uploads/1/3/0/8/130815213/xorufozuk-fogamozezedo-gapaxu-xufupoxufof.pdfIn PDF document text
    • http://nulapodis.ponyexpressprints.com/uploads/1/3/1/3/131379485/wadekamupoziz-venediwi-gawatunir.pdfIn PDF document text
    • http://files.annapicklesharvey.com/uploads/1/3/1/4/131438427/6022432.pdfIn PDF document text
    • http://files.flalaw.pro/uploads/1/3/0/9/130969631/pewixavegunaletimu.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/1/0431/4526/5318/files/98174872927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/bisection_method_in_numerical_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7715/files/academic_reading_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/rogawski_calculus_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/tometalelitemowofenune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/6849535363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/dumopubonate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2857/8467/files/lavigekalarutufuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4553/6419/files/vfw_certificate_of_appreciation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/22577955975.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_off00007d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0A 5332 bytes
SHA-256: 63204d289fdb5a61faab0b9d9e30574a6de87187b434288e8aefa3f5dee89790
font_01_sfnt_off00008f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F31 10304 bytes
SHA-256: 692c0b55f71704f2f2b5511a0dc5852879c1fe571259c487cbf59aced8ce284a

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