Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4299610d1943ac9…

MALICIOUS

PDF

52.6 KB Created: 2020-08-29 22:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdf5c149bf8c67520e2f4242f8df09d2 SHA-1: c42912f0918e4a912b554ab591da430df61aeac2 SHA-256: d4299610d1943ac9e0560e0926ddb17ba0d0c76bc39238b8d092a4a915c4081d
160 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Monster Hunter 4 Ultimate' cheats, which is a tactic to entice users to click on embedded links. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the primary link leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many of which point to static.usrfiles.com, indicating a link farm used for SEO manipulation or distributing malicious content. The SE_ADVANCE_FEE_SCAM_LURE heuristic further supports the malicious intent by identifying language typical of advance-fee fraud.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.link/wix?keyword=monster+hunter+4+ultimate+citra+cheats
    • https://static.usrfiles.com/ugd/a298ce_cc53e0b2e7644c58bb49352abd04129b.pdf
    • https://static.usrfiles.com/ugd/b8c837_770529f384cc46e985d680319b9a3c68.pdf
    • https://static.usrfiles.com/ugd/bb13a2_3132c5a99db943cfbd08e2d0e0c892d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_829cea406804493f85b9df4538762e89.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb83d719e33b44a686e30bb87ddaa843.pdf
    • https://cdn.shopify.com/s/files/1/0459/7114/4871/files/animal_sounds_list_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/vuzugixojeful.pdf
    • https://cdn.shopify.com/s/files/1/0437/7001/9998/files/kofonabewutavujoduvu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1117/7639/files/voxeletupomevotewosivuw.pdf
    • https://cdn.shopify.com/s/files/1/0440/8003/8053/files/cisco_press_ccna_routing_and_switching.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff353f829f794dfb93bbf2e2d906ad84.pdf
    • https://static.usrfiles.com/ugd/b47706_6df8c0c512c34ee3b2a37e396ce3a032.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taniseraguvifololesugom.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4485/files/94219175562.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000090fb.bin
663880f6775e804bdfcc57ad792c3afac2dd891e98fac92d059b1ea72dbbb136
pdf-font-stream PDF embedded font (sfnt) at offset 0x90FB 5132 bytes
font_01_sfnt_off0000a243.bin
71d33cb9b4f2497a974e2197d7dd190f183217b519528b788c7ed2bbb2ad7a80
pdf-font-stream PDF embedded font (sfnt) at offset 0xA243 10476 bytes