Malicious PDF — malware analysis report

Static analysis result for SHA-256 587d89b402703a57…

MALICIOUS

PDF

82.1 KB Created: 2020-09-01 03:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13b03e0eca397f7221424a3674e2565e SHA-1: d8727f471df3057496ebd8666024da8b2fbfdfc7 SHA-256: 587d89b402703a57576571847209317c70891ee3543072317e702aa7ff873769
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is designed to lure users into clicking on potentially harmful content. The document body, though heavily obfuscated, contains the URL and keywords related to 'adrenaline hormone pdf', suggesting a deceptive lure. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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=adrenaline+hormone+pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/kidinirupejoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4869/6993/files/friday_the_13th_part_3_cast.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/xizuxibezubenisoz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/lebonixozutuli.pdf
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/roman_candide_en_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6360/7445/files/46922361043.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/vanilla_wow_hunter_macros.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/how_to_face_interview_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/7923/6760/files/piliwirotijulefurefez.pdf
    • https://static.usrfiles.com/ugd/6df952_f0e7c1b693434d088c4919db59fed7c5.pdf
    • https://static.usrfiles.com/ugd/79e0dc_777bafef0cf94f96a358068e4a6c820e.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e24f.bin
3423b2e47a20803a50241950a0263602fbdda6c44c7209d8b995f9ae5d2fe6f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE24F 4800 bytes
font_01_sfnt_off0000f25d.bin
f3211188d7b84f009b77c893dacbd0f9fa100562218278800fb53194066d301f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF25D 11096 bytes
font_02_sfnt_off0001187f.bin
9759ce8d6b03285eaaf0b3a467cae172b6556f7d7d175f3d646a9f0b73e2040d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1187F 16160 bytes
font_03_sfnt_off00012d90.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D90 4324 bytes