Malicious PDF — malware analysis report

Static analysis result for SHA-256 b44207bf3c410e4a…

MALICIOUS

PDF

97.0 KB Created: 2020-08-09 21:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 737d9b5236b4b70e709dd2503774644e SHA-1: 0c9fbd821234c2336e2aa5ec72336eae08b499ca SHA-256: b44207bf3c410e4a0ef09b3fa80843c15ecb6553a433180c6de6d09f27b1c426
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is designed to redirect users to potentially harmful content. The document also exhibits characteristics of a link farm, with numerous embedded links to PDFs hosted on various domains, including 'cdn.shopify.com'. The presence of these links suggests an attempt to distribute malicious content or engage in phishing activities.

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=bartolome+de+las+casas+libros+pdf In PDF document text
    • http://files.noah-wright.com/uploads/1/3/1/4/131453713/murefor.pdfIn PDF document text
    • http://files.focusworksedc.com/uploads/1/3/1/3/131384432/932e923c40d4d5e.pdfIn PDF document text
    • http://files.silverlakebarroncounty.com/uploads/1/3/2/6/132695543/fubavixiruw.pdfIn PDF document text
    • http://rubosid.maamedsmukase.com/uploads/1/3/1/1/131163667/duzeloz.pdfIn PDF document text
    • http://files.faumconline.net/uploads/1/3/0/9/130969297/wizewikivasemesiz.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/1/0431/5247/4267/files/vaikom_muhammad_basheer_stories_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1228/4831/files/rezuzowuzivunokiviborar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/action_words_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4227/4471/files/console_commands_fallout_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7447/7473/files/72801557073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/atlas_world_map_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8509/3281/files/nta_net_sociology_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/91048799747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/rusavagaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3182/2485/files/22668997792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/sobufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/mowiguvowifep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/tokaseropixodavaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/pension_calculation_sheet_revised_format.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C90 5492 bytes
SHA-256: 322dc6f16c263e7ad66509ebc07666a3c46df01ed89a602d5ad79b1342bc6323
font_01_sfnt_off00014f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F20 11468 bytes
SHA-256: f2e326348758c0d1a2de63b6984a35d3a20c456a434ceabf74ba7d2b765689e6