Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f5885dc7d3c6c5…

MALICIOUS

PDF

48.6 KB Created: 2020-08-26 23:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f254602fa654323201b7e5062c211e3f SHA-1: eabbedf304deac454b3aa61044e8f9daa7e63d38 SHA-256: f2f5885dc7d3c6c51cb0730049ac6e8836c8e6bf63fe0edd0dc0e1062a0fc017
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link promising a 'line play gem hack', which redirects to the malicious URL ttraff.ru. This URL is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains the same lure text and URL. The presence of numerous links to Shopify PDFs suggests a link farm tactic to improve search engine ranking for malicious content.

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=line+play+gem+hack
    • http://files.coastalcandyphotography.com/uploads/1/3/0/9/130969545/namebetepogaf.pdf
    • https://cdn.shopify.com/s/files/1/0451/2923/6645/files/arjuna_award_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/83211351523.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/bosch_fridge_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/87182261240.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/s_p_name_status_video.pdf
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/dosojepurigoganexopubi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/3591195968.pdf
    • https://cdn.shopify.com/s/files/1/0430/0875/3827/files/61569594667.pdf
    • https://cdn.shopify.com/s/files/1/0435/3202/6008/files/pexigepa.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_off00005089.bin
c6740cbe68cfea56b7d9ba9a340135e75d2084a2f4b8c9e45b9bba63f72e5343
pdf-font-stream PDF embedded font (sfnt) at offset 0x5089 5180 bytes
font_01_sfnt_off00006202.bin
f187bb83f403962fd5ede0c989533cb7a4a925d59e1fab53e55243a4822de9bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6202 2876 bytes
font_02_sfnt_off00006e57.bin
3707e3e8b96538697cd5d364ede454d652150c0b91b96d5a3fcb5c0b6b89919d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E57 15020 bytes
font_03_sfnt_off00009d2e.bin
b6cb87855678982a456548db43ca2fd93da4381cd1ddb043a23bcc45d07733c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2E 17092 bytes