Malicious PDF — malware analysis report

Static analysis result for SHA-256 28b466b8aed18b56…

MALICIOUS

PDF

56.9 KB Created: 2020-08-23 00:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a5908fddfad9b82aeccf5ee7da54022 SHA-1: 190cefbe738a4860cd7286c4932c653dc5f081ef SHA-256: 28b466b8aed18b56ffa4595ef609dab97fd9238a3246727a990c44dc23bf37f5
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is presented within the document body, disguised as a 'Macrolink group annual report'. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The presence of a callback phishing lure heuristic further suggests a social engineering attempt. The primary attack vector appears to be directing users to malicious infrastructure via a deceptive 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=macrolink+group+annual+report
    • http://files.iamwhoiaminc.org/uploads/1/3/2/6/132681690/9155037.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/xowijekopa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/72384082010.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2389/files/vuzexafexasabaxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/game_guardian_4pda_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/aditya_hrudayam_in_telugu_with_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/1000_milliseconds_to_seconds.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/california_eviction_defense_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/streamline_english_directions_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/minion_rush_game_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/nuvokubiruwomukateg.pdf
    • https://cdn.shopify.com/s/files/1/0440/0388/5206/files/6765771419.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/sentenza_bossetti_motivazioni.pdf
    • https://cdn.shopify.com/s/files/1/0457/7525/7756/files/lagu_karo_perbual_averiana_br_barus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009207.bin
236c3cc72bee877e5941f26cf5574e54b47480ba1726c78b5177f746ccc1fb07
pdf-font-stream PDF embedded font (sfnt) at offset 0x9207 4876 bytes
font_01_sfnt_off0000a2ae.bin
33e43aab3c37cc957620081dad66ad11d4a5019272d1da3ded73578d49aa8d64
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2AE 11096 bytes
font_02_sfnt_off0000c886.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xC886 4324 bytes