Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5e855f29a95166…

MALICIOUS

PDF

44.3 KB Created: 2020-08-26 01:13:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a7a9f35ebb511caafafb398083625e5 SHA-1: a5209c8bcb3e7633af4a2c8b25871b0f4afda432 SHA-256: 1e5e855f29a951661680be9ea1c62902e3eabba2eaccf7505bb4a2ddd3d6d4ac
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 of which point to a link farm hosted on Shopify. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure via the URL https://ttraff.cc/pify?keyword=explication+de+texte+alain+propos. This suggests the document is designed to redirect users to malicious sites.

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.cc/pify?keyword=explication+de+texte+alain+propos
    • http://files.brookeboone.com/uploads/1/3/1/1/131164076/1465455.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/piano_arpeggio_practice.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/76762764687.pdf
    • https://cdn.shopify.com/s/files/1/0433/9394/1671/files/7558806242.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/32819437895.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5759/files/imperative_verb_forms_in_french.pdf
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/28665726077.pdf
    • https://cdn.shopify.com/s/files/1/0460/3383/0052/files/free_special_education_powerpoint_templates.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71299233386.pdf
    • https://cdn.shopify.com/s/files/1/0463/9693/2251/files/davutabuvapeteki.pdf
    • https://cdn.shopify.com/s/files/1/0432/8741/2900/files/39717041616.pdf
    • https://cdn.shopify.com/s/files/1/0448/2488/7456/files/magisterium_tome_1_gratuit.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_off00006cb3.bin
a2ddf0359d18e68ff4567a1e8ea8cabc54abffbaecc81ba57ba170912c450351		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB3 5092 bytes
font_01_sfnt_off00007e0c.bin
bdeb68703c5589fc97faa6a5018dc6d4218597bae0f88868e4e6e65e81c31ff7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0C 11876 bytes

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