Malicious PDF — malware analysis report

Static analysis result for SHA-256 60617fe87a580e9d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-09 01:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df051185b593849c9718cba0ffffbb21 SHA-1: 24eb458b243342e64bf4d8bcf6a144df908785e9 SHA-256: 60617fe87a580e9dbcb41682b2e8375eabe47b1c5d1f324b9e257b7bf3673b3a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=absceso+hepatico+piogeno+pdf'. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic 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.cc/pify?keyword=absceso+hepatico+piogeno+pdf
    • http://files.gourmetsofspain.com/uploads/1/3/1/4/131452821/xogov-vidinuvovikatu.pdf
    • http://files.eckartfingberg.com/uploads/1/3/0/8/130814644/f4d9b5d.pdf
    • http://daduku.wyndcharmsilkenwindhounds.com/uploads/1/3/1/6/131636612/8495944.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/nedugoduzugokik.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/6216281317.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1644/files/rasulibonowijizujewap.pdf
    • https://cdn.shopify.com/s/files/1/0439/0843/2027/files/pitijisalipuvo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/51119016833.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/nipimunojufopanomomi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5172/9574/files/17125913938.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/xufemokisodumapakugi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5520/8858/files/guide_to_insolvency_and_bankruptcy_code_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/0144/4512/files/54060659650.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/tobizukimuzovemufamom.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_off000064d1.bin
3b6e91a8fce4257bf592db804d1cac7a007ee92b6b181fa622b75fcf0c96889e
pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 5204 bytes
font_01_sfnt_off00007670.bin
f2c888ea677f5895083efd3369d3f0ce9454ca5005896246b52497a20ae9babc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 10176 bytes
font_02_sfnt_off00009931.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9931 4324 bytes