Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d41b120c23591ff…

MALICIOUS

PDF

44.5 KB Created: 2020-08-11 13:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e07e805d3b26846aaaafa4c8bb164af SHA-1: e25c989cd3fc47034614d077ad0cbe7be1cf7c2d SHA-256: 3d41b120c23591fff0a9c1b0631db637a4a72044d50b0171353935a9770f81a8
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, specifically pointing to 'https://ttraff.com/pify?keyword=export+kindle+cloud+reader+to+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, many of which are hosted on Shopify but point to potentially malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=export+kindle+cloud+reader+to+pdf In PDF document text
    • http://bonisob.cullenelementary.com/uploads/1/3/2/3/132303382/kudinatezixa_vasusego_nitujogipako.pdfIn PDF document text
    • http://files.flynnmediagroup.com/uploads/1/3/2/6/132681492/finabate.pdfIn PDF document text
    • http://nanesa.drlindaford.com.au/uploads/1/3/0/8/130874493/8965338.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/1/0437/7670/4669/files/coordinating_conjunction_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/bank_exam_gk_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/4995679699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4567/4389/files/arterial_puncture_for_blood_gas_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/81247064219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/2738309985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedifoniwupub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/honda_trx450r_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/bujufarudimidivoviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2289/files/88886761705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2064/7576/files/vofafofaxabirowitexadatij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6832/4005/files/70701879466.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 5

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_off000070ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70AE 5060 bytes
SHA-256: 64a46e0bb0b3667c3d2eb7e020ca01fba6588b437d676ffc6de3586ad4449d37
font_01_sfnt_off000081fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FE 10316 bytes
SHA-256: 478205ceef7a339628d82833f2b97ee390765e684438f479273475e1cec7195c

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