Malicious PDF — malware analysis report

Static analysis result for SHA-256 0751d5f60a2de4f6…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 16:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ae28b3acfc0c91778bee3ea3df7fa8b SHA-1: 3aea77839a111e5672bffcca4f17c5c44ec83cd4 SHA-256: 0751d5f60a2de4f6b40f10e8032db5dc552b6c086d59d71e4166d33a3ee432c2
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=mango+uk+size+guide', is identified as a malicious redirector. The document also features a large number of external PDF links, many pointing to Shopify, suggesting an attempt to obscure malicious activity or engage in SEO manipulation. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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=mango+uk+size+guide
    • http://puxogi.elvesandmorewestmi.org/uploads/1/3/1/1/131164462/sotarid.pdf
    • http://files.bloom4wellness.com/uploads/1/3/1/4/131453574/bee20f20444ed.pdf
    • http://nupowi.leadingmenfiberarts.com/uploads/1/3/1/3/131383483/2044193.pdf
    • http://foligo.tylershipmanmemorialcarshow.com/uploads/1/3/2/3/132303064/volur.pdf
    • http://vesani.utahversatility.com/uploads/1/3/1/8/131856158/gizuzom-dokogonibavig-pamipo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/gojikedobelokaxemebilebut.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/givusadadasot.pdf
    • https://cdn.shopify.com/s/files/1/0438/2231/7728/files/characteristics_of_descriptive_research.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/73277640039.pdf
    • https://cdn.shopify.com/s/files/1/0449/7866/7688/files/85260250383.pdf
    • https://cdn.shopify.com/s/files/1/0434/6881/6544/files/83435505317.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/81231932075.pdf
    • https://cdn.shopify.com/s/files/1/0431/0633/6925/files/award_certificate_template_funny.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/vunejiwafezilevajigok.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/master_convert_excel_to.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/git_force_pull.pdf
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/fleischner_society_guidelines_2019.pdf
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/gilonalazojomofamoranem.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061f3.bin
e7a23bebdaa4479fbb1e8ad73360d2f46bb9a64ab28fbc43650d7a9cdd7c5de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F3 4984 bytes
font_01_sfnt_off00007307.bin
589ef64883e303587e7d8ef42661bfc6da9be9ece9dbd3c479d6a6089de710d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7307 2412 bytes
font_02_sfnt_off00007c86.bin
36fcb8b798b7fb910a28183a7bc26258db81727dbda1b463251a97ac952eb21a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C86 10544 bytes

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