Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f6cc280323a5c7f…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 06:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce3dc61c429109eae82cfb2e3af03679 SHA-1: 585e80d4dcfefba9957bf632b6de2a29a513b0ff SHA-256: 9f6cc280323a5c7fcb78bdf99a58bc746c7ebccbff04a3a22e0a279cad0f34b0
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also contains a large number of external PDF links, suggesting a link farm for SEO poisoning or traffic generation. The presence of a 'download button' heuristic further supports the lure to click the malicious link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=email+verifier+software+free++full+version
    • http://files.jbmi.net/uploads/1/3/1/4/131437725/713083340a55c3d.pdf
    • http://files.uncommonpracticesweboffice.com/uploads/1/3/1/3/131381706/7193900.pdf
    • http://wevuzor.futurefitness4allofyou.com/uploads/1/3/1/4/131454165/sejogunekizema_bosepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/94414508292.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/john_deere_license_plate.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/bksp_admission_form_2018.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/vudemasaxebajen.pdf
    • https://cdn.shopify.com/s/files/1/0430/6590/1210/files/yellow_pages_uae_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/movikulewerudazuxedo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/national_time_server.pdf
    • https://cdn.shopify.com/s/files/1/0437/8319/2738/files/battle_star_gallactica_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0447/0688/9882/files/amcas_letter_request_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/9353/9478/files/81232105262.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2533/files/sodufegofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/84766140696.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_off0000600e.bin
5ab0710072a6bdbbde7b7aeda96cd5eee37d2710030c40b19713624649b25b37
pdf-font-stream PDF embedded font (sfnt) at offset 0x600E 5024 bytes
font_01_sfnt_off00007120.bin
a2c0d528e9f9e912d1dadf66a99616ba39324f53dbe3fe5bbb8bea915e129615
pdf-font-stream PDF embedded font (sfnt) at offset 0x7120 9980 bytes