Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f4cbe6b48b157d…

MALICIOUS

PDF

44.6 KB Created: 2020-08-11 01:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d96e5df8955398f65d011c380dab04b SHA-1: 9cba88a84604ed41d3c5e3ef35990ea6c491ed92 SHA-256: f1f4cbe6b48b157d3a44158c2e6533ea6a5408354b047c74294555955ee17ca8
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, indicating the primary attack vector is luring the user to this external site. No scripts were extracted, limiting the analysis to the PDF structure and embedded links.

Heuristics 3

  • 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.
  • 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=cash+flow+from+investing+activities+pdf
    • http://files.broadbandbytes.com/uploads/1/3/0/8/130873810/rogijanipak.pdf
    • http://sawovalaz.stillnessandstrengthyoga.com/uploads/1/3/1/6/131636664/fevawofejizu.pdf
    • http://files.mariosmathtutoring.com/uploads/1/3/1/3/131398498/sapax.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0444/0922/5382/files/hydralazine_davis_drug.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/how_to_merge_branch_to_master.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/14675490470.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/zz4_crate_engine.pdf
    • https://cdn.shopify.com/s/files/1/0438/5744/5029/files/xetafalixiwozutojiga.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/central_budget_2020_20_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/73729721496.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/bankart_repair_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/68006364164.pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/unicast_dsid_psn_startup_error.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_off00006fbf.bin
10d8084ddccb78d956525963805797d967414e61e4b168aa9b31fd78c3ae6ef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBF 5628 bytes
font_01_sfnt_off000082d2.bin
b7cc10f6b714f043b39f1128470ab18a047c98828aa5c4b3217387fe701cfa45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D2 10076 bytes

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