Malicious PDF — malware analysis report

Static analysis result for SHA-256 180784059069e5dd…

MALICIOUS

PDF

74.2 KB Created: 2020-07-28 11:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5419a72d7d5defac827cdf9968059bbc SHA-1: c52feff58fa97209ec78758adcc6c4f26811ceca SHA-256: 180784059069e5dd797a63c4c52bc8e0a6fa7cbd0e6b30d9a2f2af95113fd21d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The heuristic PDF_SEO_LINK_FARM indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or phishing. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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/pify?keyword=hematochezia+pada+anak+pdf In PDF document text
    • http://files.paperperchphotography.com/uploads/1/3/1/4/131453982/f7cae8fb7806e60.pdfIn PDF document text
    • http://files.maketheeffort.org/uploads/1/3/0/9/130969980/ed419f.pdfIn PDF document text
    • http://files.kristajoan.com/uploads/1/3/1/0/131069906/5846706.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/1/0430/5892/1621/files/xuxuroxaxure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/pubajudasulonukezigeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/livevusimomunipozera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/64113626710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/99028257419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/jozolekawot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/73298648721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/tomiwafurexevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2886/3397/files/razabidato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/tulonevorinoxilirinenero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/sivovufogifutilutokilaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/23132489048.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 4

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_off0000e3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B0 4952 bytes
SHA-256: bc081b48b1db753208e6487863fcada10e2b52920e1b49cba9a2c57cd0151933
font_01_sfnt_off0000f46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46F 11652 bytes
SHA-256: d16060ecd6ff3244850f6c0c346fccca1f7295235c20214faa5410de250f97ff

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