Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f96a2a627deed18…

MALICIOUS

PDF

39.4 KB Created: 2020-08-15 18:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3007fe6d5b059bf90204ea89661ff27c SHA-1: 249420626d0535e40cc1807040e0d6f2b8eaa520 SHA-256: 8f96a2a627deed18090fa23a17caf24170ffb7c5e1887a3b2209f6f2ba0ad681
170 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a lure to external malicious content. The presence of a 'download button' lure and instructions for a password-protected archive suggest the document is designed to trick the user into downloading and decrypting a payload. The primary malicious URL identified is ttraff.ru, which redirects to content related to creating a CV on Android, likely a social engineering pretext.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=cara+membuat+cv+lewat+hp+android
    • http://zegumu.sbesyes.org/uploads/1/3/1/3/131381679/zafaretijukosudisu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/9268266715.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/50138991290.pdf
    • https://cdn.shopify.com/s/files/1/0450/6599/4392/files/cash_flow_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/kumaxerolanujin.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/loniridutarakev.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9529/files/90823753042.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/pdf_annotation_app_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/ronamibajebanifipu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6231/9517/files/non_profit_bylaws_template.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/wogodem.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_off00005c5e.bin
eb26d3d63382150452126daba6c182081a9935d1d2e7d78a6f38a1140390272b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5E 5332 bytes
font_01_sfnt_off00006e69.bin
816df18921354afdc0f01d09ccb702ae3f13f5cff7a2af16651d0f8b6a5ac616		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E69 10180 bytes

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