Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb4d39c33f4e6b4…

MALICIOUS

PDF

41.5 KB Created: 2020-08-23 18:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 903a6992fe3315f197e383f513ae64f2 SHA-1: d259278a9c2a502d71b81c4c5a6d71b1e84c6227 SHA-256: 1eb4d39c33f4e6b4afbef4145daff0e7a9cfdaba26f2449bf72d253059d3fd6c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=video+format+converter+mkv+to+mp4`. This link is likely intended to lure the user into downloading further malware or visiting a phishing page. The document also contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or redirection strategy. No scripts were extracted from this sample.

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=video+format+converter+mkv+to+mp4
    • http://puvugogo.vertex-tooling.com/uploads/1/3/1/3/131378991/bizokamofeguxavomen.pdf
    • http://files.icanondemand.com/uploads/1/3/1/4/131407315/9798661.pdf
    • http://tuvotemu.mothersunite.net/uploads/1/3/1/4/131454151/ddb4b56922347a.pdf
    • http://files.bwaltonwrites.com/uploads/1/3/1/3/131381237/59e0aadf584.pdf
    • http://rakez.sharonvigil.com/uploads/1/3/0/7/130776672/xometela-degalimufujimem.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/35180414307.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/86241942789.pdf
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/79068709262.pdf
    • https://cdn.shopify.com/s/files/1/0436/5923/1385/files/branches_of_abdominal_aorta.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/vixisexidisiv.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/hyperbola_problems_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musuvagexas.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/90036242173.pdf
    • https://cdn.shopify.com/s/files/1/0435/3179/6632/files/ansiedad_en_los_adolescentes.pdf
    • https://cdn.shopify.com/s/files/1/0433/4413/4294/files/ielts_general_writing_task_1_samples.pdf
    • https://cdn.shopify.com/s/files/1/0431/4349/5842/files/brahm_kavach_full_path.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegofegomena.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_off00006439.bin
cb9cdb09c6c1e57ca20a348fce1e410745439f49ec778f58ae66ff8f69bd2c1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6439 5268 bytes
font_01_sfnt_off0000761c.bin
eae381014e5b3bc64d3dc473ed9dd589b41fb3690830d2485c345ef4278b6a5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x761C 10192 bytes