Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed4db46d14cee93…

MALICIOUS

PDF

50.6 KB Created: 2020-09-01 07:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 904c4852341b5508bfd4969b3a82f0c0 SHA-1: 4342ecd4a2767b96fd369351b574d36be1c5e644 SHA-256: 8ed4db46d14cee93f72881fd21de4dbce73f0a29b001ab786ce9e93c7c05ce17
120 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 'https://ttraff.com/wix?keyword=crsu+date+sheet+ba+1st+sem'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on shopify.com. The document body, though partially corrupted, contains text related to 'Crsu date sheet ba 1st sem' and the malicious URL, suggesting a lure for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct payload execution.

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/wix?keyword=crsu+date+sheet+ba+1st+sem
    • https://cdn.shopify.com/s/files/1/0434/9588/2918/files/pazumip.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/62378176547.pdf
    • https://cdn.shopify.com/s/files/1/0438/7163/3563/files/30364293984.pdf
    • https://static.usrfiles.com/ugd/455f95_76850434ab8948a2a0be52965e2befaa.pdf
    • https://static.usrfiles.com/ugd/2b25b5_b2530ee849e043b19e762e2de0d09f13.pdf
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/72166302413.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/55080933377.pdf
    • https://cdn.shopify.com/s/files/1/0459/1756/9173/files/2012_chevrolet_volt_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/demand_planning_in_supply_chain_management.pdf
    • https://cdn.shopify.com/s/files/1/0437/6949/5713/files/walujobamomatozimijatu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0231/files/33048174169.pdf
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/kuwatijavigogizaxavamu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5371/1513/files/battletome_khorne_bloodbound.pdf
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/81768383025.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000641a.bin
4cf53cfb06470b2e372307df5e4e2644c635db7195375b69bc30acc9eef605aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x641A 5128 bytes
font_01_sfnt_off00007557.bin
b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7557 3720 bytes
font_02_sfnt_off000080ba.bin
b78ac75a1e46434e430f7a387d4b4c9b2f92ab7076a232e250d294355a2dc374
pdf-font-stream PDF embedded font (sfnt) at offset 0x80BA 10192 bytes
font_03_sfnt_off0000a3ca.bin
dc93ca4a9df63a4fbc19cb6fa4ddf443705f9d13280ce33b0620b4eb0ba51b04
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CA 7736 bytes