Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b0b22c58a09e02…

MALICIOUS

PDF

38.1 KB Created: 2020-08-03 08:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1119501e1706aa16425853f7d074266 SHA-1: 43b84fcad69e241b9f18e9fe024bacb29a7e38c7 SHA-256: 46b0b22c58a09e0217d5cb052d5538339d730e8954025e2abff5ef9dff581283
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded links, including one to `ttraff.ru`, suggest a redirection to potentially harmful content. The document body contains garbled text and a reference to the redirector URL, further supporting the malicious intent.

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=jandy+valve+actuator
    • http://files.stillherethinkingofyou.com/uploads/1/3/1/8/131871734/rewaku-wefazaweve-xixokasufuxuzis-togagewez.pdf
    • http://baxabop.tmpropertysolutions.com/uploads/1/3/1/0/131070581/kagisapelomowit.pdf
    • http://files.tedlandonline.com/uploads/1/3/2/8/132815367/firabivi.pdf
    • http://vajup.cheshiredem.org/uploads/1/3/1/4/131408029/durakad_sekarorobo_taxadeso.pdf
    • http://files.clearlivingconsulting.com/uploads/1/3/1/3/131380342/c7f82.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0164/files/40891120879.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/xeragazozodesigu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/vobewezubavavakuji.pdf
    • https://cdn.shopify.com/s/files/1/0435/8111/2483/files/68982711173.pdf
    • https://cdn.shopify.com/s/files/1/0438/7618/8315/files/72108567599.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/29883959297.pdf
    • https://cdn.shopify.com/s/files/1/0435/8461/8653/files/36947975311.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vibemegabixowosepabotabux.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/16311885730.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/foxetarus.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/jigasowanosejalum.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/john_deere_x320_manual.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_off000055db.bin
64a4d63ba7ff13219fed7613313bf9d8bcff7f571275a5a426ddb5c215ac6217
pdf-font-stream PDF embedded font (sfnt) at offset 0x55DB 4904 bytes
font_01_sfnt_off000066a8.bin
e20a18ad37802317dc989de81e743d601fcf460b1c67973ad765b690696ef230
pdf-font-stream PDF embedded font (sfnt) at offset 0x66A8 10724 bytes