Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a1749491bd96c4…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 05:10:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 439f65691a48fe021c2c873937cc337b SHA-1: 377f62213d9a2200e0a6bb36309cb1ddf22c8b0a SHA-256: 16a1749491bd96c4f0ba056b4dcba3bcdcf5ddf3d79f7adffb18f4cd1f9cce64
194 Risk Score

Malware Insights

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

This PDF document contains numerous links to external resources, including a suspicious redirector URL (https://ttraff.cc/wb?keyword=full%20length%20plays%20pdf%20free). The presence of a link farm and the ML classifier's high confidence score indicate a malicious intent, likely to redirect users to malicious sites or download further payloads. The document body itself is heavily obfuscated but contains the redirector URL.

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.cc/wb?keyword=full%20length%20plays%20pdf%20free In PDF document text
    • http://files.helloweirdos.com/uploads/1/3/1/6/131606502/xerutofux_pasopabuw_getufowujese.pdfIn PDF document text
    • http://files.luciwheelchair.com/uploads/1/3/0/7/130775893/vezetolugexogesekoja.pdfIn PDF document text
    • http://diduke.gerardtalavera.com/uploads/1/3/2/7/132712323/424c53dc.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/1/0436/1958/2110/files/37493962185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/91194018228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/irs_publication_550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kenetawibonilolususede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/tofomap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/40049781891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/29566666071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/rain_man_soundtrack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9234/4999/files/47124067352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/2751802767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/fojiriraba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7707/files/weider_body_works_exercise_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40429789840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/wowegobib.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 3

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_off000068a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A2 5360 bytes
SHA-256: 531ce2012aac04c2c1bc643885fa63f7747bf292232613d82c454a3e8534ec9b
font_01_sfnt_off00007ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE6 10524 bytes
SHA-256: 95ec0458d352fdcb85a61ecd1a1e78ba2d318a26d4f698749d56dcf696d6904b

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