Malicious PDF — malware analysis report

Static analysis result for SHA-256 027db3358b67ba47…

MALICIOUS

PDF

43.9 KB Created: 2020-08-03 15:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04e62555fc837f685d9d45b096ff58b3 SHA-1: 2bf8b720157a19e99a62edb9123376d0b7d2592d SHA-256: 027db3358b67ba472f3cecac499dd0b861f2877b48913a50f0235a85c2849aaf
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of an SEO link farm or a redirector strategy. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.ru'. While no scripts were extracted, the document body and embedded link structure suggest an attempt to drive traffic to malicious or deceptive websites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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=manual+de+drenagem+linf%25C3%25A1tica+pdf
    • http://files.crownguitar.com/uploads/1/3/1/6/131606393/2887847.pdf
    • http://files.latitudetravelplanning.com/uploads/1/3/1/3/131398322/weliv.pdf
    • http://files.thearamaicscriptures.com/uploads/1/3/0/8/130813781/8997320.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/dosufuvefenomigipitijorom.pdf
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/14184103239.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/dupusijokinegotesawuleze.pdf
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/3961517287.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/domovexijos.pdf
    • https://cdn.shopify.com/s/files/1/0432/0880/2466/files/pamukipiwejusoraros.pdf
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/50734163501.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/nakebubot.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/79457301254.pdf
    • https://cdn.shopify.com/s/files/1/0428/4012/9692/files/zapigumanobunavesipez.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/proform_elliptical_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6719/files/xusin.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_off0000697c.bin
09415d0acb8eb4c2a0f76f1d5831bbf68d9934e5b7279b2398a604a0712be47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x697C 5536 bytes
font_01_sfnt_off00007bc6.bin
6ecf06cf3f8deab7a337f6fdc3e365abdd949441549458adf87950fc09d0e4f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC6 12396 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.