Malicious PDF — malware analysis report

Static analysis result for SHA-256 a008814893524fe3…

MALICIOUS

PDF

50.3 KB Created: 2020-08-19 16:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 004711ff42ff354538aa6b49109be929 SHA-1: 527063188d2e2809e04bcdaf80edb0a7c9d1de19 SHA-256: a008814893524fe3cd09c3cf4eb250adcc60b975c4cfa6aedce40571f10658b4
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, contains this URL and references a 'syllabus pdf', indicating a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The primary malicious URL is 'https://ttraff.com/pify?keyword=cds+2019+syllabus+pdf'.

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=cds+2019+syllabus+pdf In PDF document text
    • http://files.divorcecoachingandconsulting.com/uploads/1/3/0/8/130874518/bejam-soselovorifat-tekumubobup-powidonuvewadar.pdfIn PDF document text
    • http://neruli.schrockguide.net/uploads/1/3/1/4/131453780/luzorupagogipunimu.pdfIn PDF document text
    • http://files.thehanoverclub.com/uploads/1/3/1/3/131380480/sofemorigex.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/1/0432/4704/2728/files/79854904552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/8509450699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9833/3599/files/oster_toaster_oven_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5169/1681/files/beechcraft_1900d_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/lumurekabukepidezuvopiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/pujewuxupan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/cs5_master_collection_serial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/50005733128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9652/9314/files/97384448598.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7953 5108 bytes
SHA-256: 8fa970d56a4d0bb077bd1ac0385b1fd0fe919236b1cda847f45ac26843741132
font_01_sfnt_off00008ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB1 10520 bytes
SHA-256: ca1b9082d8e98e7b1c52fb84b5b491660ec6ac6b581a0590529ce1833d58b704
font_02_sfnt_off0000ae7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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