Malicious PDF — malware analysis report

Static analysis result for SHA-256 b79c48ac3c242ef9…

MALICIOUS

PDF

41.8 KB Created: 2020-08-04 14:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 71f81f31c034c46b168a58cbf842266d SHA-1: 95ac06bc23f6479e4869c3970a608dbb5303328b SHA-256: b79c48ac3c242ef9cf1fd382055bd8a1f846d72932d65299c7b07890f7540a9b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a significant number on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=circuito+electrico+pdf'. This suggests the document is designed to trick users into clicking malicious links, likely leading to phishing pages or malware downloads. No scripts were extracted from this sample.

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=circuito+electrico+pdf In PDF document text
    • http://files.jinkymarsh.com/uploads/1/3/1/6/131636792/fovulajejisavaf-vavatuj-bonadaboda-kajuko.pdfIn PDF document text
    • http://files.comesailingcharterschicago.com/uploads/1/3/1/4/131437385/jadogefefu-nadowegez-zelud.pdfIn PDF document text
    • http://files.angloburmeselibrary.com/uploads/1/3/1/3/131380107/e876a.pdfIn PDF document text
    • http://files.beaumonttennisacademy.com/uploads/1/3/0/7/130776812/2996223.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/1/0432/5939/6254/files/31475461038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/44422207807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/sefitawujubon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0231/3373/files/98295862630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6046/0706/files/12160498806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/mokefasetobapiterol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9339/3557/files/mefen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6746/4093/files/jomulowenomune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/muzibisetozazozogelekuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/mepokefusimulisun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7580/3038/files/wutigupezupusatuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/vufuluxakoxipeluxi.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_off000064a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A7 4664 bytes
SHA-256: 8cbaa4117f615b8181316a37c4dacc8314b69e55d9c09bd715ee3cebdecafc7a
font_01_sfnt_off00007496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7496 11192 bytes
SHA-256: 3504f28817d9a4c8e5c8bc73a431d00d72e7864d603c8264c847d5d20e7b11e3