Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e8096b66cb19ab9…

MALICIOUS

PDF

45.7 KB Created: 2020-08-26 07:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c9ea14880a8e1411a5518b7927ce402 SHA-1: a375942fc0aa46943f34e4c7a66896d5c27ff291 SHA-256: 5e8096b66cb19ab9b19aa6252d470a8500707b64bdef5a6f9ad00359ae4f9df3
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes the same URL, suggesting an attempt to trick users into visiting malicious content. The presence of numerous Shopify links, many of which are likely part of a link farm, further indicates a malicious intent to distribute or redirect to harmful sites.

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=shadowrun+bioware+list
    • http://files.mackeiganmarketing.com/uploads/1/3/1/4/131452732/sodopafesub.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/bedafa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3681/0152/files/gituzuzixefovemowogewita.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/dungeon_world_character_creation.pdf
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/44872702127.pdf
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/lofuzosufirufik.pdf
    • https://cdn.shopify.com/s/files/1/0463/2969/2322/files/sample_senior_manager_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/812681099.pdf
    • https://cdn.shopify.com/s/files/1/0437/9177/7949/files/fijobexijodavatirokuzo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4530/files/77259503940.pdf
    • https://cdn.shopify.com/s/files/1/0434/3716/2657/files/jadavavutaweso.pdf
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/finding_equation_of_a_line_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0441/2122/7416/files/21091112852.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_off00006bf3.bin
310337baba43025eb6634fc8a08edb63c06e416f584ba7dcd1023aeab5100ed9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF3 5248 bytes
font_01_sfnt_off00007dcb.bin
2e8942cc4c4a430b1cd6a3fdb927fdd937d2ea01f927107d549b1019132029f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCB 14288 bytes