Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f079653586eba5…

MALICIOUS

PDF

44.3 KB Created: 2020-09-22 05:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 973e84e87087951fcdebfdfe0fa8fe67 SHA-1: 1434c612ddad37393deac9792c47165c2d1ed01b SHA-256: a2f079653586eba523c368c5c68254fe26646447f18c6744c073d994060e34aa
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=consecutive+integer+word+problems+worksheet+pdf'. The document body also contains this URL, suggesting it is the primary lure. The presence of numerous other links to Shopify PDFs indicates a link farm strategy, likely to improve SEO for malicious content. No scripts were extracted, but the overall structure and the malicious redirector strongly suggest a phishing or malware delivery attempt.

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.club/wix?keyword=consecutive+integer+word+problems+worksheet+pdf
    • http://files.lwvlcf.org/uploads/1/3/1/4/131453645/fenivozemelux.pdf
    • http://rawuris.rentalcottageontario.com/uploads/1/3/1/0/131070387/begesejixebuzaleroku.pdf
    • http://guxaxeb.maestrodonappert.com/uploads/1/3/2/3/132303354/kajakozokezan.pdf
    • http://zutabiv.treetopflowers.co.nz/uploads/1/3/1/0/131070450/mefewogufib_labadutasuzav_lefijeripaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/4082/3706/files/16407101106.pdf
    • https://cdn.shopify.com/s/files/1/0437/1457/6538/files/zobuwunukuzakuxumevamito.pdf
    • https://cdn.shopify.com/s/files/1/0434/9349/0838/files/anacortes_high_school_transcripts.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/elf_bowling_1_game_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/17665636775.pdf
    • https://cdn.shopify.com/s/files/1/0431/6682/6656/files/52545744645.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1146/files/18222484902.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/zuwulejidakavitoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1196/files/power_outage_report_dallas.pdf
    • https://95663e5c-f7e9-41b3-ba7c-68c98114355f.filesusr.com/ugd/436160_6b318c9dae444e2a9a22e88bc502ddfc.pdf?index=true
    • https://23bbf5a5-e507-4d00-ae78-1b66baeaef37.filesusr.com/ugd/217b8a_e66aff3f973443c2a4355d415d771d6a.pdf?index=true
    • https://7b9a5171-e347-45f1-b75b-75c2dfabfa5d.filesusr.com/ugd/f1780b_8c2373a1ba7d49f8b12647b09cc5c654.pdf?index=true
    • 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_off000059d1.bin
4646b61a5f8cb6c0d656bfda1d0590740f5029623106499592451de023da288a
pdf-font-stream PDF embedded font (sfnt) at offset 0x59D1 5620 bytes
font_01_sfnt_off00006cd9.bin
20a6e8377105c5af958008c53ac90c8d06e684d7d3763bc20bd505e0408178b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD9 9876 bytes
font_02_sfnt_off00008ee8.bin
2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE8 16060 bytes