Malicious PDF — malware analysis report

Static analysis result for SHA-256 a49e9c858d82c107…

MALICIOUS

PDF

64.6 KB Created: 2020-08-12 01:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95254d29cddd5635a8f99abb13a518c6 SHA-1: 3fcc2186c834f8b9ee4a3cb94e5c8913c067645a SHA-256: a49e9c858d82c107c514c320ccc9342726ec3595712fb29b5d99202f9b34bcd6
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to improve search engine rankings, with one prominent link redirecting to malicious infrastructure. The primary malicious URL is https://ttraff.ru/pify?keyword=ccda+official+exam+certification+guide+pdf, which is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the certification guide and the malicious URL, reinforcing the lure.

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.ru/pify?keyword=ccda+official+exam+certification+guide+pdf
    • http://files.frc5492.org/uploads/1/3/1/1/131164002/4328937.pdf
    • http://fametexo.thedolphinboat.com/uploads/1/3/1/3/131381435/vusixonololiwigek.pdf
    • http://files.stevenkriegerlaw.com/uploads/1/3/1/4/131409677/7d7bea3d20.pdf
    • http://files.victoriahulltemple.com/uploads/1/3/1/1/131164386/6dd134466546130.pdf
    • http://lefeze.kaseystertz.com/uploads/1/3/2/6/132681459/rulivirux.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3655/files/21081487804.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/videtazejojukolila.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kawovuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/sasuzivoxa.pdf
    • https://cdn.shopify.com/s/files/1/0451/3356/2010/files/54906721325.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/53538753046.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3733/files/regipulonumula.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/acl_reconstruction_rehabilitation_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8327/files/inverter_welding_machine_circuit.pdf
    • https://cdn.shopify.com/s/files/1/0437/8486/3893/files/mechanics_of_materials_3rd_edition_philpot.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/jopiletewef.pdf
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/77419657681.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_off0000ab91.bin
cac7970ff44a7c0bf465e9de9f27261901d01c629f79dca8db7379e26042a0dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB91 5268 bytes
font_01_sfnt_off0000bd6a.bin
7c473f68f9cdf712f7a3913db50b2e88069385780e9b1e9ae29ad2ecc0fc3900
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD6A 13024 bytes
font_02_sfnt_off0000e74d.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xE74D 4324 bytes