Malicious PDF — malware analysis report

Static analysis result for SHA-256 b89290713dfef371…

MALICIOUS

PDF

48.7 KB Created: 2020-08-08 05:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bc9c3d09576d05296bda5d4a3f7bd82 SHA-1: 78d18d40a6ab392802275f4b39f2d945df7d4806 SHA-256: b89290713dfef371c31509b2df4281c0bbce6a3703c22f4841abc0b4b132e8bb
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=archangel+s+shadows+pdf+espa%25C3%25B1ol', which is likely intended to lead the user to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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=archangel+s+shadows+pdf+espa%25C3%25B1ol
    • http://files.pittsburghlegaljobs.com/uploads/1/3/1/0/131070452/boreregovevo-bifelego.pdf
    • http://sojulesir.trinityfengshui.com/uploads/1/3/1/1/131163599/8377161.pdf
    • http://files.phoenixnyteachers.com/uploads/1/3/1/6/131607522/bakobawafifiw_vijoralaw_minamudawimefa_nedune.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/79809742077.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/84294774754.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/didawubesomasusexaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/8053/8526/files/acsm_certification_review_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/jixivilixogew.pdf
    • https://cdn.shopify.com/s/files/1/0429/8529/1937/files/1929617263.pdf
    • https://cdn.shopify.com/s/files/1/0432/9170/5502/files/zeledetijo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4461/5830/files/kevikevizimudikijo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/waresudogenufeg.pdf
    • https://cdn.shopify.com/s/files/1/0437/6379/4069/files/rrb_alp_medical_certificate_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/70624994269.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0429/files/cambridge_primary_science_worksheets.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_off0000716b.bin
dcb29b96e68cfa015d5cf32e72a722f549833350f99ace63936bcccbb7a2a3f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x716B 5712 bytes
font_01_sfnt_off000084af.bin
5f6f9961271237692eb32b4d8f88336a6b86694f995196e5aca03a12a22c4e88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84AF 15420 bytes

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