Malicious PDF — malware analysis report

Static analysis result for SHA-256 f162f6492e9a998d…

MALICIOUS

PDF

39.4 KB Created: 2020-08-24 21:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85cdfdc2474c299b0242c457e04950c2 SHA-1: d2d8f20b8d59eaba30ee57d3246b0c0dbf40a5c4 SHA-256: f162f6492e9a998db13f5ece0ca77a673b761a274b21ae4f4e4a27a5db75bddc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, 24 in total, designed to create a link farm. One of these links, 'https://ttraff.ru/pify?keyword=hrithik+bike+racing+game+mod+apk', is identified as a malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a lure.

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.ru/pify?keyword=hrithik+bike+racing+game+mod+apk
    • http://files.upwardfacinglife.com/uploads/1/3/1/4/131436971/velolerulamur_baxafijirun.pdf
    • http://files.tcspringtraining.com/uploads/1/3/0/7/130740596/zevajisek.pdf
    • http://files.rockysrockets.org/uploads/1/3/0/8/130874380/b5a5671f544eb8c.pdf
    • https://cdn.shopify.com/s/files/1/0440/5824/7320/files/equipment_rental_contract_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/83459543916.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/25362122618.pdf
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/74031531039.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/dog_the_bounty_hunter_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/jevipodo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8618/3577/files/dog_vaccination_card.pdf
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/welding_of_aluminum_and_its_alloys.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/cic_canada_visa_application_form.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b91.bin
303ea0f8ab3be76ed1f33165e2859d8c098fbfcd727e4ad6cb0875e7d0537c23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B91 5444 bytes
font_01_sfnt_off00006ddc.bin
06fc0f7f47208b9190774527e57db672c57fdb64ea46fbe2f3170b0bf20c0393		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDC 10280 bytes

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