Malicious PDF — malware analysis report

Static analysis result for SHA-256 342420d0060118d5…

MALICIOUS

PDF

43.9 KB Created: 2020-08-01 13:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a6cfc81f8e2a83456ed656896808c0d SHA-1: b4db5f6b74248902a83c3e9c7048507221f3fa7e SHA-256: 342420d0060118d5776461d98e38cf0c93cd5a6defedd6cbc7fca5c1d636c052
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, with one prominent URL identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Darksiders 3' and the redirector URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm intended to distribute malicious content.

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.ru/pify?keyword=darksiders+3+mysterious+stone+sigil
    • http://files.biglervillemusic.org/uploads/1/3/2/7/132710603/suvuboxumavesesibape.pdf
    • http://files.healthybeautyenergy.com/uploads/1/3/0/7/130775982/maranif.pdf
    • http://files.philadelphialogisticscenter.com/uploads/1/3/1/1/131164476/jokimolomi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/96405913002.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5324/files/xefokavasada.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/gibepunovibuxos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0663/files/guxizozanudan.pdf
    • https://cdn.shopify.com/s/files/1/0435/8681/4109/files/17362449885.pdf
    • https://cdn.shopify.com/s/files/1/0434/2297/4117/files/fakoxobusa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/8784376901.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajakeveposemilakojataza.pdf
    • https://cdn.shopify.com/s/files/1/0437/6608/7838/files/wiwobomadumowo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/67028188887.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/bijusutajozififubofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musigusuwekun.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/demuxebuz.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_off00006d33.bin
c374271a93cd7000b7d692fcd4760763fd1aa2dee4c654340f8eec05491426fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D33 5476 bytes
font_01_sfnt_off00007fcc.bin
1545ff21934a292b97cd6393f8a99ac3890239c72be5a6599b9b8f543b76339b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCC 10088 bytes