Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f37202ffb0f0a7…

MALICIOUS

PDF

55.0 KB Created: 2020-08-25 04:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 369ba121df6faf3c273db8efd7147cf8 SHA-1: 59ec255dfb236a00116a48e2bcd12cf4982e5d4a SHA-256: 60f37202ffb0f0a7cd649405cc32b1380cc5c8abd9608b7426646ebf4f53e706
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a link farm designed to distribute malicious content. One prominent URL, https://ttraff.com/pify?keyword=delivering+the+goods+reading+passage+2+answers, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'delivering the goods' and the malicious URL, suggesting a lure to trick users into clicking through to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=delivering+the+goods+reading+passage+2+answers
    • http://files.puppetcinema.com/uploads/1/3/2/6/132696122/6978591.pdf
    • http://files.californiaayurvedawellness.org/uploads/1/3/1/4/131407493/8e0e49.pdf
    • http://files.gtmathematics.com/uploads/1/3/0/7/130776518/f302a3ac1f82f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/8951/6958/files/vamuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/kaxeretisanuzodotaxoduve.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/ruduvif.pdf
    • https://cdn.shopify.com/s/files/1/0461/5186/0387/files/sedinigutimarela.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagesagebog.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/sabokugerixevaxarerela.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/tukazijavexonizipesifiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/3414172933.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/wuvasugizivebi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8552/1311/files/kathi_mela_kathi_song_in_starmusiq.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1147/files/tewawix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9856/1948/files/agrobacterium_mediated_gene_transfer_in_plants.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008be9.bin
e4ab31f23d874df8eeeae4b6c6d32d59717c11271b57366370d21ae7ee691536		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE9 5292 bytes
font_01_sfnt_off00009df2.bin
5b1869d0924cc2f55b1c7560344cde54ed5d330f8f52aeb1681bb845daa0b635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF2 10216 bytes
font_02_sfnt_off0000c0dc.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0DC 4324 bytes

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