Malicious PDF — malware analysis report

Static analysis result for SHA-256 3918606671be28b3…

MALICIOUS

PDF

40.8 KB Created: 2020-08-19 11:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bda2ba186c190e7242e0f6c873ab5d95 SHA-1: 4559f92bf30f1bb1cb190cf8a8564dab028ff2c2 SHA-256: 3918606671be28b3aed88fdd1a293a5389f6f69f5c6bb97d0db9906d72482bef
140 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body also contains text related to 'bmo harris app android' and includes the malicious redirector URL, suggesting a lure for phishing or malware download. The presence of numerous PDF links, many hosted on Shopify, indicates an attempt to obscure the malicious destination.

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.ru/pify?keyword=bmo+harris+app+android
    • http://vopokib.dymondelise.com/uploads/1/3/1/8/131871449/xatobazukev.pdf
    • https://cdn.shopify.com/s/files/1/0429/0710/7495/files/bomunemuxigofofum.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7287/files/aliphatic_amino_acids.pdf
    • https://cdn.shopify.com/s/files/1/0434/8788/7526/files/siloteniravupinakanulub.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/dobul.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7091/files/assertiveness_in_the_workplace.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/lol_karthus_build.pdf
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/accounting_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3170/files/can_ps3_play_ps2_games.pdf
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/nicolas_bourbaki_general_topology.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/39830711187.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/cutting_edge_advanced_teacher_s_resource_book.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_off00005f99.bin
eba6e53f6a85c95680df9f10f0ac9034e3dae96e47c0ef5ef78a37368c47c06c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F99 5216 bytes
font_01_sfnt_off00007126.bin
8fb2b0d8661bc9a7c71afed3687817e75cf80dc87facd5aa85954b4f0dd0a47d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7126 10640 bytes

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