Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eaf60eba73fe84a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-17 16:38:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d89ef7484820881376b16f02a150e0a8 SHA-1: ed6fb5c36d91b8b65ff92d0d488db7bfb0c2f0d1 SHA-256: 0eaf60eba73fe84ac7bf329866c44216fac09ead33c032738c87b1102f01947e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to trick users into downloading drivers. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination.

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=poweredge+t30+drivers
    • http://files.carlystong.com/uploads/1/3/2/6/132695586/gogulijujet_vapapezuropizi_duburobugam.pdf
    • http://files.uclasaepi.com/uploads/1/3/1/1/131163914/gevuzadujunusamaki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/2956/1495/files/ankylosing_spondylitis.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/pazugajufuvokixozejewole.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/arihant_analytical_logical_reasoning_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8982/0838/files/how_to_cure_vampirism_in_oblivion.pdf
    • https://cdn.shopify.com/s/files/1/0438/4977/7312/files/zilewukejogudi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/70453183403.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/mosidawagamisid.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/atom_remote_ftp.pdf
    • https://cdn.shopify.com/s/files/1/0436/2685/6601/files/mini_projet_capteur_de_temperature.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/barbie_movies_links.pdf
    • https://cdn.shopify.com/s/files/1/0435/4562/4744/files/vobomit.pdf
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/58893449934.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_off00005bcb.bin
c681998d518d6ad1cc3d5548c5cbdf325088d5f1f157d05f8f871fb11f82b9e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCB 5212 bytes
font_01_sfnt_off00006dae.bin
893798bcb935508b373a8b22a1150e7d57012fa3a6993f3ce91c972e3af2eccf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 16192 bytes