Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f65e7be3e7f6c9…

MALICIOUS

PDF

36.2 KB Created: 2020-08-10 03:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbe42e2769c99bc695bc6a519c8fd518 SHA-1: 8d4d73065b8a3f416a34583f40e2e88e64aa2a11 SHA-256: e0f65e7be3e7f6c9402a5bc8cca3c456939b932af23b86b2ec43e93d8b4b5312
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector (ttraff.ru). The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content or conduct phishing. 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.ru/pify?keyword=al+noorania+pdf
    • http://tubiso.therungururelay.com/uploads/1/3/0/7/130739430/xukobulapo.pdf
    • http://niminilu.piratehaterjenny.com/uploads/1/3/0/9/130969465/2307505.pdf
    • http://kogubapig.aflakmjarah.com/uploads/1/3/1/4/131454012/a00133637e.pdf
    • http://files.everythingcapturedphotographyart.com/uploads/1/3/1/8/131856664/6232982.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/tolozosewe.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/bloons_tower_defense_3_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/kusozogigipatotixuki.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/81040329386.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/dufovavijugel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/kutegitulumamegoduviv.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/80361317290.pdf
    • https://cdn.shopify.com/s/files/1/0437/2050/7546/files/99835698877.pdf
    • https://cdn.shopify.com/s/files/1/0429/4397/1484/files/bohemian_rhapsody_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0437/4075/8170/files/1_3_5_divided_by_2_3.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/tawejexusumevowejulugup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005058.bin
bb1f81df49693378f1de3d51885374dada1fc9104a90a33169d2d292870cc9dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5058 4848 bytes
font_01_sfnt_off000060e4.bin
6e7858d9b214d4bad7e45240b5146819e5b28059345f778c0c1e423b197b1120
pdf-font-stream PDF embedded font (sfnt) at offset 0x60E4 10372 bytes