Malicious PDF — malware analysis report

Static analysis result for SHA-256 60115639677c0b2b…

MALICIOUS

PDF

43.6 KB Created: 2020-07-28 10:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c335f1b1c845cb1c3fb1bbe39be6f936 SHA-1: 6aa71448d862cb1646ed38210a1d3c45e9344193 SHA-256: 60115639677c0b2be02ff2fb2635374d2168d02f609ef44b565f311f4d1b4738
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains text related to 'baptism in the name of jesus pdf' and 'wkhtmltopdf', suggesting a lure to a website that may be related to this topic, potentially for SEO manipulation or to host 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.com/pify?keyword=baptism+in+the+name+of+jesus+pdf
    • http://files.bucketofsudsnc.com/uploads/1/3/1/4/131453967/c75d13dc64e1.pdf
    • http://files.differenttranslation.com/uploads/1/3/1/4/131406629/2441aa3d4.pdf
    • http://files.artizastone.com/uploads/1/3/1/4/131437308/2e9f528f55eda54.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/gojifuvepezeroko.pdf
    • https://cdn.shopify.com/s/files/1/0428/5667/7543/files/60462110797.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/25845058270.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2095/files/fagoxodogewajeziron.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/zelesakefipopokobaxiterun.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/wugipapupixegufabele.pdf
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/fufapojaroxerexeteki.pdf
    • https://cdn.shopify.com/s/files/1/0437/1926/2357/files/xalerisaxesowogoxuzotoje.pdf
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/rafotilopudexi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/muronufuki.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_off00006d85.bin
dcbcf12a7750ec1e95c5d8406b441dc1d2dc0e5e935a4e7f4925b21717b4d403
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D85 5160 bytes
font_01_sfnt_off00007ee4.bin
732d1e71aabd7dc5ec0e1844e2e0374cfd7abea52b04adecb30955affa0fe320
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE4 10052 bytes