Malicious PDF — malware analysis report

Static analysis result for SHA-256 183253755a3ed731…

MALICIOUS

PDF

45.4 KB Created: 2020-08-02 19:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a66d6190db31857709e053e4a9bac03 SHA-1: 3ca365873dcbcb96f7378c99daa0f91b9ea7abfb SHA-256: 183253755a3ed7312191acfafacd402ad4a1e57a23075234b271335b856d8fe1
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting it is a 'workbook and study guide', a common lure for phishing or malware delivery. The presence of many external PDF links, including benign ones on Shopify, suggests a link farm intended to obscure the malicious redirector.

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=issa+workbook+and+study+guide+answers In PDF document text
    • http://files.himalayanadventures.net/uploads/1/3/2/6/132681880/4915522.pdfIn PDF document text
    • http://files.laurasaye.com/uploads/1/3/2/6/132682076/datet_bebod_xagobutafele_xuratep.pdfIn PDF document text
    • http://files.handsofhopegallup.org/uploads/1/3/1/4/131414743/d0e36.pdfIn PDF document text
    • http://files.cforcesystemssolution.com/uploads/1/3/0/7/130776204/43d935.pdfIn PDF document text
    • http://files.wynwhisper.com/uploads/1/3/1/0/131070611/xekedobopizoxoj_zasipop_bezomana_minivigosovilur.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/1/0433/0212/5733/files/74745500503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7335/5419/files/jebivazamokokitisijadezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/94426332329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5455/0440/files/berger_reloading_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sotuxinonuwirumedubisaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/32690992274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39086675177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/lirejoxesefemirit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1122/7300/files/jawirujata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/29167169223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/piwifezekobipamamage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2827/4585/files/mivemawutak.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_off000071eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EB 5296 bytes
SHA-256: c452ac00603778aa6bfcaf79ee060ca33e0da78ea6c14e2df540ce19aac7e377
font_01_sfnt_off0000841a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841A 10668 bytes
SHA-256: 2c300772f4b86ac2a41604f81b78e79ddb4432f2542bacb0f1e34aa7683b4fe3

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