Malicious PDF — malware analysis report

Static analysis result for SHA-256 28c34e3ab909b5a6…

MALICIOUS

PDF

41.6 KB Created: 2020-08-13 06:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 830fe8ddd4e9acab31b8ce8588ad2961 SHA-1: 02958991bfee3ac644bffd9ec6c7cb4b67415937 SHA-256: 28c34e3ab909b5a654ad7fae85ce4fc6c4627d6985b8d7678d31876f61b51f07
128 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, pointing to 'https://ttraff.ru/wb?keyword=rain%20international%20compensation%20plan%20pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0432/8531/5737/files/24672203685.pdf'. The presence of a visual download button lure further supports the malicious intent of directing users to external, potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=rain%20international%20compensation%20plan%20pdf
    • http://tamej.glowstixstudios.com/uploads/1/3/0/8/130814681/suzututopunobik.pdf
    • http://bosesula.powdermillbusinesscenter.com/uploads/1/3/0/8/130874038/dikilepepatitad-lupabuxewetino-wimel.pdf
    • http://files.campmattakeesett.org/uploads/1/3/1/4/131406432/bavobomu-kerefudaz-fivebeje.pdf
    • http://rurufaki.sabakiball.net/uploads/1/3/0/8/130874104/fusajeximawirakuga.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/24672203685.pdf
    • https://cdn.shopify.com/s/files/1/0431/5227/7670/files/guxatuxotisozilokegibuwap.pdf
    • https://cdn.shopify.com/s/files/1/0431/9028/8541/files/apa_references_sample.pdf
    • https://cdn.shopify.com/s/files/1/0435/5637/2641/files/wuvuxujamijapixo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/93856694965.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95610310087.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/bitotavavakez.pdf
    • https://cdn.shopify.com/s/files/1/0437/4924/5079/files/lose_yourself_clean.pdf
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/nizutisoraxovo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/56493252009.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/fonuxusuvupipulukel.pdf
    • https://cdn.shopify.com/s/files/1/0438/2110/5309/files/31877810835.pdf
    • https://cdn.shopify.com/s/files/1/0429/4646/1855/files/single_nucleotide_polymorphism.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4722/files/aramco_calendar_2020.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_off000062f5.bin
d4dfaac1c705a4f012cc401c79cc30f6c72a7d65c5376faee3d54faaa2caa277
pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 5308 bytes
font_01_sfnt_off000074ea.bin
8b63fa0996e9000a972ca37b09e1fa25fd6786ef7cc23d4eff55b3f27ca44c95
pdf-font-stream PDF embedded font (sfnt) at offset 0x74EA 10488 bytes