Malicious PDF — malware analysis report

Static analysis result for SHA-256 83828775540ec2e6…

MALICIOUS

PDF

41.2 KB Created: 2020-08-23 15:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ff364b77742f3526caf6d2a76dde7b4 SHA-1: 7863652ec43e995c74329f70e7bf74bf2fc96842 SHA-256: 83828775540ec2e6e4809dbbbb026bfa26bc21db0be7b2549feeb6ce374bb460
160 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Appleby college school uniform' and embeds multiple links. One critical heuristic indicates a malicious redirector link to 'ttraff.com', and another identifies a PDF link farm. The document body, though partially corrupted, contains the same malicious URL and several other PDF links, suggesting a phishing or redirection attempt. The primary intent appears to be directing the user to a malicious site via the 'ttraff.com' URL.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.com/pify?keyword=appleby+college+school+uniform
    • http://files.melrosespeech.com/uploads/1/3/1/4/131411281/poxelakotivexasu.pdf
    • http://sosuruzil.davidjonesdialogues.com/uploads/1/3/1/8/131871390/4e3cc770c.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5879/files/string_format_to_hex_c.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/88411030285.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3267/files/vifajadux.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/banjara_lambadi_dj_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/jipaxasovuziparo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0021/files/heart_beating_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/tajitepalamevogiwunutal.pdf
    • https://cdn.shopify.com/s/files/1/0438/3683/3952/files/windows_god_mode.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_off00006088.bin
fc9ffa4cb8addef830bbbdcbbd879d855c9556fcac2bddcbbcca7c5ce84bce41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6088 5448 bytes
font_01_sfnt_off000072e7.bin
0211cdbbf1a7d0d376cf5f512f1c90defd7c1b100bdfc04560fc7cbeea26965a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E7 11528 bytes

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