Malicious PDF — malware analysis report

Static analysis result for SHA-256 14919af99901e793…

MALICIOUS

PDF

43.6 KB Created: 2020-09-07 11:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0073398d1840153b8cfba5f974d48acd SHA-1: 3be8661849841d3393473e628d473cd51e8a31a3 SHA-256: 14919af99901e79351434cd49bc9c7aad183b523df6459a675f29da1b9c6b293
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'breville barista express manual' and a URL that appears to be part of a link farm designed to manipulate search engine results. The presence of a malicious redirector suggests an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=breville+barista+express+manual+coffee+machine+video
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_ef293696e40146b081cc655ead63f4dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0de796fada64556b4cb00baf59f5ec7.pdf
    • https://static.usrfiles.com/ugd/1d64af_88d3d4d5112342b0accbda558ff36b7c.pdf
    • https://static.usrfiles.com/ugd/097bd5_f39e1835d8d140f28d3e8b3ea20d90ae.pdf
    • https://static.usrfiles.com/ugd/83d902_eae73ca62a4c43c387482fbbd3555405.pdf
    • https://static.usrfiles.com/ugd/6d59ab_9da8f93fcd7148689d281f684cb1b021.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/fiwitisawilejenatamej.pdf
    • https://cdn.shopify.com/s/files/1/0433/4200/4375/files/93537724778.pdf
    • https://cdn.shopify.com/s/files/1/0431/9336/8725/files/73158034445.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0481/files/rilelozimekorot.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/surerebodoxipo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/mo_murda_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/job_application_letter_sample_doc.pdf
    • https://cdn.shopify.com/s/files/1/0448/0411/2545/files/mtg_agricultural_science_grade_12.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/principles_of_polymerization_solution.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065a6.bin
304de4851fdaa4e2ca8b769a922c8933bf60f7fb32489443b586125b68db0e1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A6 5712 bytes
font_01_sfnt_off000078f1.bin
b4b1f6a0efce94faaf5e50e20060804305d3318e2b8e0fa89502c8521ac63d83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F1 12348 bytes

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