Malicious PDF — malware analysis report

Static analysis result for SHA-256 a924187a57db2237…

MALICIOUS

PDF

48.8 KB Created: 2020-08-24 14:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19dff784dbacbd87e9a98951035bed30 SHA-1: 70893a90f1fa4be72062d60e3b014614ec9ad30c SHA-256: a924187a57db2237201fa3e35b03f745f2f6d98b7048f8db8143556b89f33f06
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=crazy+stupid+love+movie++mp4'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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=crazy+stupid+love+movie++mp4 In PDF document text
    • http://suraruz.obsmanual.com/uploads/1/3/1/4/131453133/7814200.pdfIn PDF document text
    • http://files.billinghurstorchestras.org/uploads/1/3/1/4/131452878/1236946.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/1/0429/1241/5907/files/5313874879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72966212333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4317/6091/files/witonibatudezov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7702/files/jijifafitufunaninuwovavuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0753/3475/files/rectangle_with_rounded_corners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3202/6008/files/fuxusor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9229/5332/files/ferixasug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8962/9079/files/hands_on_artificial_intelligence_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9224/5666/files/achondroplasia_radiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/kenetaxuzepoxaraz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00006c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2B 5312 bytes
SHA-256: 54f2006a657562569e3056fe23cba61a6a6513135cc54b53f250241b6420697e
font_01_sfnt_off00007e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3A 10016 bytes
SHA-256: f5dcffa765dc69e2a094f9180d51e64930ceeab2d73625ad3425eb405480feee
font_02_sfnt_off0000a0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0CC 16192 bytes
SHA-256: b168039b654f979c140925a464ef75142322e9f7cc9a166e601b7839e62a3bff

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