Malicious PDF — malware analysis report

Static analysis result for SHA-256 2031ed25cdefe13a…

MALICIOUS

PDF

49.1 KB Created: 2020-08-20 08:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e30eeeec88244488697616d83b61cd5f SHA-1: b5bc84f354022a7c348499094a2cf087f48f4dbc SHA-256: 2031ed25cdefe13a4390c1f49a0a7032fe2e61feb82a22468d0d580b636ce6e7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm pointing to numerous Shopify-hosted PDFs, with the primary link redirecting through ttraff.com. This indicates a phishing or scam attempt, likely to distribute further malware or lead users to malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted from this sample.

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=battlefield+2+map+pack+single+player
    • http://files.ipac-victoria.ca/uploads/1/3/0/9/130969470/basem.pdf
    • https://cdn.shopify.com/s/files/1/0435/5407/8871/files/25648963741.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/wesikapemumob.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2589/files/fexena.pdf
    • https://cdn.shopify.com/s/files/1/0436/4566/5433/files/vonazixuzidebitoxusatu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/sotogi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/faxudud.pdf
    • https://cdn.shopify.com/s/files/1/0432/8849/4236/files/wovidirefalize.pdf
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/93041336846.pdf
    • https://cdn.shopify.com/s/files/1/0440/5559/3110/files/togevobimusezetite.pdf
    • https://cdn.shopify.com/s/files/1/0438/3509/7245/files/desktop_support_engineer_resume_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/oxford_dictionary_offline_download.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006984.bin
885fb613581d433d2fe8327a29e06bca83507f06e9016103b6a5c7f7a09f1972
pdf-font-stream PDF embedded font (sfnt) at offset 0x6984 5820 bytes
font_01_sfnt_off00007d4e.bin
65caa82f51921d21758511e2c499b03a3c1434c27f42917064f204089eafa8e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4E 10548 bytes
font_02_sfnt_off0000a1a0.bin
91c92fab729f552433758475f1ecf6a366c66c74ae6b4dd9e31a9a0100f2b42c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A0 16332 bytes