Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65c7cb4c39387b8…

MALICIOUS

PDF

47.6 KB Created: 2020-08-25 21:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15c763ecf98b9ab2382a1a4ef4cf1490 SHA-1: 85e36c67c157021666921380c3c8ff28c2cc7d02 SHA-256: d65c7cb4c39387b8092d73cf8e45a52e0387c90b1d4feb5f8985d6e2561e1fcc
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL, presented as a movie download lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation or 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.com/pify?keyword=descargar+rapido+y+furioso+7
    • http://vezap.rorymacdart.com/uploads/1/3/1/4/131438809/jileriniwan.pdf
    • https://cdn.shopify.com/s/files/1/0438/4469/8272/files/54705737372.pdf
    • https://cdn.shopify.com/s/files/1/0433/3086/3259/files/golibidozunozibozogam.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/field_trip_report_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/napisogimusigat.pdf
    • https://cdn.shopify.com/s/files/1/0430/8346/4855/files/chimes_music_tune.pdf
    • https://cdn.shopify.com/s/files/1/0434/3981/6861/files/rafebaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/kisuxezibomujexaveb.pdf
    • https://cdn.shopify.com/s/files/1/0434/6934/0822/files/liripexeruxufe.pdf
    • https://cdn.shopify.com/s/files/1/0440/2901/8262/files/metal_detector_sensor_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/monica_after_the_storm_album.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a8e.bin
7c13cfbb0cfa710cb019baca17f6b8dc5c3af9bf7c3799f2ad56f76e8556fdf9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8E 5168 bytes
font_01_sfnt_off00007c45.bin
5262d0b400e09fa6d9015139368a7c1a50942b3851f42029006622cc11025266
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C45 11592 bytes
font_02_sfnt_off0000a23a.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA23A 4324 bytes