Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3ea77abdcc28708…

MALICIOUS

PDF

59.7 KB Created: 2020-08-11 19:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97cac1a623909e328d8801c0239a77c7 SHA-1: b5fc4aca5091550954169ba5d107999438ba34cc SHA-256: b3ea77abdcc287089b6f6d48ce1f105739a272a16cb3ec2d2f524f9fc07d1333
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. Additionally, it exhibits a PDF link farm pattern, with numerous links pointing to external PDF files, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be luring users to malicious sites via deceptive links within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=diziler+%25C3%25A7%25C4%25B1km%25C4%25B1%25C5%259F+sorular+pdf
    • http://files.josefjakobs.com/uploads/1/3/0/7/130739726/pafofoxero-lidilin-pibupijizofo.pdf
    • http://gefeliv.ceciliatueros.com/uploads/1/3/1/4/131407406/100520037c32d18.pdf
    • http://files.solitlife.net/uploads/1/3/2/6/132681851/pisinoxufu.pdf
    • http://files.superstarbooks.com/uploads/1/3/1/4/131452840/vazisosiwe-kuxabu-sejinaxowe-wabeputikulonik.pdf
    • https://cdn.shopify.com/s/files/1/0430/8497/2183/files/47462960571.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/17287033610.pdf
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/addressing_modes_in_computer_organization_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/negojugon.pdf
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/abyat_e_bahoo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/lonely_planet_greece.pdf
    • https://cdn.shopify.com/s/files/1/0438/9657/0024/files/66410156144.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/english_speaking_tips_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6682/6656/files/troy_bilt_5500_watt_generator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/zubadizuxup.pdf
    • https://cdn.shopify.com/s/files/1/0440/1243/7662/files/gafamesizefujariga.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7561/files/48665343213.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_off00007dfe.bin
ebc0c66205eecaa15b97408e97b4ca266c1ef79c221d6a066ab8c4dd73ae161d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 2884 bytes
font_01_sfnt_off0000883d.bin
3f9d20a96db6030a3a4a7d7bd4d07cb5e1fd10719fee175f1d9dbfc48d666f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x883D 5760 bytes
font_02_sfnt_off00009b1f.bin
8674c445b60f4ce330468b76a84115a3a0426d779ade29853e74ae71abfcead0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B1F 16252 bytes
font_03_sfnt_off0000ca04.bin
660d05b38fea380e8cc13f4a5a7db764e9bd2a20a73145a73af50c118749f22b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA04 16060 bytes

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