Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfde45b19b094f99…

MALICIOUS

PDF

39.9 KB Created: 2020-09-06 18:56:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 681fd78dc37c3c86af21305482373195 SHA-1: bf97cc0edd729fed931419088035218ccf619f6e SHA-256: bfde45b19b094f9918da25a2008ad21a592793713e0e7c6a045d3016062e56a3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=icomania+level+7+answers'. The document body, though heavily obfuscated, appears to contain references to 'Icomania level 7 answers' and the malicious URL, suggesting a lure to trick users into clicking the link. The file also contains a large number of embedded links to Shopify domains, which is indicative of a link farm, likely used to obscure the true malicious destination.

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.me/wix?keyword=icomania+level+7+answers
    • https://cdn.shopify.com/s/files/1/0434/2670/9665/files/codex_40k_vk.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/kotexilobimijepemobed.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/what_kind_of_iphone_is_model_a.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/water_pollution_introduction_project.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/juvebukutofosakagonokojof.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/renuvekigosode.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5791/files/resojobinumuvojolifivem.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/seleketowuxuxa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/48996501455.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/toeic_answer_sheet_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/62929523802.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8838/files/swedish_language_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9661/files/kevulixakasusebivovije.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2085/files/textcontent_vs_innerhtml.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_off00004abe.bin
34203dc4c9f6172b0cede7b7c69b33a28953a106cb229ccdbfaecadec31387ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x4ABE 4824 bytes
font_01_sfnt_off00005b00.bin
d89372eb60bf9cd940315a40769a74fffcc4942b0dd16c1a4fa39c3a85891684
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B00 13540 bytes
font_02_sfnt_off000084d2.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x84D2 4324 bytes