Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe402c9711de178f…

MALICIOUS

PDF

39.7 KB Created: 2020-08-24 01:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ac2310383520d05de395f1ac028f973 SHA-1: e7c6f45ea74ddbce151eb148c81f77ffc412902a SHA-256: fe402c9711de178ff3994e49ac5ee788e0ca67fd62a8b5ccd2735df107c52fda
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this same URL and also references a link farm strategy with multiple Shopify-hosted PDFs. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to trick users into clicking the malicious link, likely to download a secondary payload.

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.cc/pify?keyword=mental+arithmetic+section+1+test+9+answers
    • http://files.annepauley.com/uploads/1/3/1/3/131380600/koxarixikesasi_rikeva_fixage.pdf
    • http://files.living-practically.com/uploads/1/3/1/4/131406344/40b4b758f273.pdf
    • http://zadinewib.evazimmermann.org/uploads/1/3/1/4/131453130/rurutu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/birod.pdf
    • https://cdn.shopify.com/s/files/1/0431/5555/4455/files/95993630285.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/14149165140.pdf
    • https://cdn.shopify.com/s/files/1/0438/1117/6610/files/struts_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/navosega.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/97636386638.pdf
    • https://cdn.shopify.com/s/files/1/0430/6668/7642/files/83574274636.pdf
    • https://cdn.shopify.com/s/files/1/0434/2857/7447/files/full_quran_with_bangla_translation_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7211/1260/files/alien_shooter_hack_version_game.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/lemawasibafakit.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/synonyms_and_antonyms_for_ssc_cgl.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_off00005be9.bin
5db04e4951ed7c9f13117cf4133ef9c8d788afa62c1b39a347146fee93cf7f40
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE9 5344 bytes
font_01_sfnt_off00006dfe.bin
ddf14a1bfd738c6fdbfc44bace896d510bc5157ddb0fbe7e50d6639c22de8d4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFE 10588 bytes