Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab195ddcc4fb0c0c…

MALICIOUS

PDF

36.9 KB Created: 2020-08-07 19:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffb4f25b13db30652588f8c942d0c7f0 SHA-1: 0bd277cfbc028c40e3c899a1e68f820829498ecc SHA-256: ab195ddcc4fb0c0c8d3e739b067394dfd5c1ed43f296fb1dd3698c34b31885cf
194 Risk Score

Malware Insights

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

This PDF file contains multiple links that redirect to malicious infrastructure, specifically a redirector used for SEO spam and phishing lures. The document body, though partially obfuscated, contains text related to 'free download pdf' and a URL that is known to be malicious. The presence of numerous links to external PDFs, many of which are hosted on seemingly benign platforms but are likely part of a link farm, further supports the malicious intent. The primary goal appears to be directing users to malicious sites under the guise of providing free 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.cc/pify?keyword=all+history+books+in+urdu+free+download+pdf In PDF document text
    • http://files.boysandgirlsclubofpembroke.org/uploads/1/3/1/4/131437236/fofonubipexujuv-sasemumo-xaditisoroga-wufoxoxataxo.pdfIn PDF document text
    • http://files.facesbeautyboutique.com/uploads/1/3/2/6/132682862/8038064.pdfIn PDF document text
    • http://files.nyunderground.info/uploads/1/3/2/7/132712006/jutaxaxa-sodowasameso-zofekujiwe.pdfIn PDF document text
    • http://files.crewofthree.com/uploads/1/3/0/9/130969352/kivavu_ripelowavasa_tekoniwuruvilex_sarixatemixut.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/1/0430/8461/1733/files/59788731853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/99052463343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1251/1128/files/76220037352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0034/6270/files/adobe_acrobat_reader_word_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2191/0694/files/roxodewoxubegajom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7871/6311/files/patterns_of_enterprise_application_architecture_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/xezixum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/wokasugiwibogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/sisawuragadadam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/pugidu.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 1

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_off000050c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50C5 5516 bytes
SHA-256: 1d4218bdb4d38e68ba2ca9253f91a2e6787e85afca8fa836c87b7ff1acf31898
font_01_sfnt_off00006395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6395 10292 bytes
SHA-256: ab2591dbb9fc656a0343a58e8aa1fd7820b770c75b3a9ae4e2788f572bdca199

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