Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7da52edb84d8c0…

MALICIOUS

PDF

45.3 KB Created: 2020-08-17 11:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d6809c8ad02569c93af963fa626ea39 SHA-1: 9a0e16f3dabf87b489de43588a1934a3fb7ebdca SHA-256: 7e7da52edb84d8c030d81adef367909d4a5bc852d5509543fb6e77f9046dd152
150 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.cc'. The document body, though partially corrupted, contains text referencing 'Hungry shark full version apk free' and the malicious URL, indicating a lure for downloading an application. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm designed to improve SEO for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=hungry+shark+full+version+apk+free
    • http://files.montclairschoolsdata.org/uploads/1/3/2/6/132696558/2819dd459a1.pdf
    • http://files.holidaycottagediss.com/uploads/1/3/0/9/130969573/6239985.pdf
    • http://vuzigarez.rotaryaviation.com/uploads/1/3/1/3/131379732/4595362.pdf
    • http://files.keikollections.com/uploads/1/3/1/6/131637881/jileguxumifov.pdf
    • https://cdn.shopify.com/s/files/1/0428/8295/7478/files/vamodilaju.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/acog_pap_smear_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mapiguwidekedod.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2952/files/pemoxenupesevuriganajafu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3557/3919/files/45761612011.pdf
    • https://cdn.shopify.com/s/files/1/0436/7846/6201/files/wetuxerizagenele.pdf
    • https://cdn.shopify.com/s/files/1/0438/5030/1590/files/dodosamapomupumu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2199/7979/files/warcraft_3_battle_chest.pdf
    • https://cdn.shopify.com/s/files/1/0435/0358/3384/files/kajuji.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/78886948618.pdf
    • https://cdn.shopify.com/s/files/1/0452/7154/8066/files/catlogo_jequiti_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1600/files/27474687201.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_off00005c0e.bin
c6370e3beb828a695f5014dcac9bcef8e83676e26e7149329aa60dc2125b6745
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0E 5348 bytes
font_01_sfnt_off00006e44.bin
59946b05fe7ef45a07fe317ebb36667f322ba5a3042be59a2cfcfc4031d5842e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E44 10340 bytes
font_02_sfnt_off000091c4.bin
02a16071353131ebed3c4d8fc2838eb253ad2f06f0c10a119750083a5927a40a
pdf-font-stream PDF embedded font (sfnt) at offset 0x91C4 16504 bytes