Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a06d8892e4669c…

MALICIOUS

PDF

82.1 KB Created: 2021-06-05 03:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66985dc602c5ce45c8de9bb047658931 SHA-1: 78c09cbca8cc3f4ca7c2fa6614190353c68c10be SHA-256: d9a06d8892e4669c5542e7236358937c613543ecdd22e625da6ebbd4f939d44e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains a large number of external links, suggesting it is part of a link farm or phishing campaign. The document body, though heavily obfuscated, appears to be a lure related to planting bulbs, which is likely a pretext to drive traffic to malicious or spam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://garglob.ru/pbw?utm_term=how+late+can+i+plant+dahlia+bulbs
    • https://vajejiwad.weebly.com/uploads/1/3/5/2/135294738/nivon.pdf
    • https://cdn-cms.f-static.net/uploads/4457590/normal_6064fcfae44ec.pdf
    • https://jedujubopo.weebly.com/uploads/1/3/4/5/134521244/4644235.pdf
    • https://static.s123-cdn-static.com/uploads/4367921/normal_5fedc10713202.pdf
    • https://cdn-cms.f-static.net/uploads/4427313/normal_6015ad8e1963a.pdf
    • https://cdn-cms.f-static.net/uploads/4459630/normal_60330236cebac.pdf
    • https://cdn-cms.f-static.net/uploads/4489422/normal_5fdc2bd54a50f.pdf
    • https://sekitajed.weebly.com/uploads/1/3/1/3/131383533/luterezip.pdf
    • https://cdn-cms.f-static.net/uploads/4459182/normal_600cea2f9b3ce.pdf
    • https://static.s123-cdn-static.com/uploads/4408319/normal_5ff96c7c9543b.pdf
    • https://cdn-cms.f-static.net/uploads/4445737/normal_5fd879a9a04b6.pdf
    • https://cdn-cms.f-static.net/uploads/4377113/normal_5fe9088bc5a01.pdf
    • https://cdn-cms.f-static.net/uploads/4475563/normal_6051570061da2.pdf
    • https://xikewewojan.weebly.com/uploads/1/3/4/0/134095915/geratikazovalif.pdf
    • https://velawavasikene.weebly.com/uploads/1/3/5/4/135400921/sojimazeto.pdf
    • https://cdn-cms.f-static.net/uploads/4421050/normal_6016d29314070.pdf
    • https://static.s123-cdn-static.com/uploads/4474445/normal_5ff32bc63e945.pdf
    • https://static.s123-cdn-static.com/uploads/4448113/normal_600136c11b16c.pdf
    • https://riginujer.weebly.com/uploads/1/3/2/6/132695799/6876766.pdf
    • https://cdn-cms.f-static.net/uploads/4486041/normal_6054d893684f8.pdf
    • https://polivepuba.weebly.com/uploads/1/3/4/5/134582029/8966267.pdf
    • https://menaxogem.weebly.com/uploads/1/3/4/4/134432074/roxef-vapexifovide.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dc238ecf-0551-4d12-bf8e-480fb43f6780/how_to_reset_pioneer_sph-da120.pdf
    • https://uploads.strikinglycdn.com/files/83146d12-7ae4-4a6b-bea3-e470ee67048c/vamakojasefozek.pdf
    • https://uploads.strikinglycdn.com/files/abad8ff4-4f7d-4d16-aca3-2a0bc96ad7b6/nawowinevuvefisajefer.pdf
    • https://uploads.strikinglycdn.com/files/8f292593-fa71-4e93-9bbb-1c94908a4b8c/how_to_turn_off_low_battery_notification_iphone.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001009d.bin
0eee56f6295ea21532cde9f97b8fb4f24e06cd365a4d720df97cd7ab3de6309c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1009D 5256 bytes
font_01_sfnt_off00011287.bin
6c147eedde3e14505b4d28e7d8047732880f3545e476ff64a5a2672fdd7388a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11287 11612 bytes

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