Malicious PDF — malware analysis report

Static analysis result for SHA-256 e864b054b916e692…

MALICIOUS

PDF

83.1 KB Created: 2021-06-03 09:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b7266cf2d6c5fce5b117599bfa45a55 SHA-1: a483568fb05665f156809f467fcf11176489a432 SHA-256: e864b054b916e69256c2a2a678e7f5a08390fa80027f36032a8c254bab29a7ca
204 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO link farms and phishing. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's content is designed to trick users into a fraudulent scheme, likely involving a fake prize or delivery. The presence of embedded JavaScript, though not explicitly detailed in the provided evidence, is a common method for executing malicious actions within PDFs, such as redirecting users to malicious sites or downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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
  • 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://queure.ru/pbw?utm_term=list+of+classroom+management+strategies
    • https://cdn-cms.f-static.net/uploads/4476135/normal_5fd3523a6d5aa.pdf
    • https://static.s123-cdn-static.com/uploads/4374376/normal_6002580296ce3.pdf
    • https://gusotefatimadi.weebly.com/uploads/1/3/1/6/131636747/7735271.pdf
    • https://cdn-cms.f-static.net/uploads/4379234/normal_60557bb6cba48.pdf
    • https://static.s123-cdn-static.com/uploads/4485705/normal_5fe41ec548a50.pdf
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5fd5f41beb0db.pdf
    • https://static.s123-cdn-static.com/uploads/4388067/normal_5ffef8f34e891.pdf
    • https://cdn-cms.f-static.net/uploads/4425507/normal_604a50a7bde48.pdf
    • https://cdn-cms.f-static.net/uploads/4445534/normal_604d23e813098.pdf
    • https://buwofapakudo.weebly.com/uploads/1/3/5/3/135316190/6c92433.pdf
    • https://gagividezi.weebly.com/uploads/1/3/4/4/134477411/bc18543e63ed4dc.pdf
    • https://xanugobolenaz.weebly.com/uploads/1/3/4/3/134371028/salunowa_fizakavuw_ludavararivenuw_watiradafegal.pdf
    • https://notesorujul.weebly.com/uploads/1/3/1/4/131407176/881380.pdf
    • https://cdn-cms.f-static.net/uploads/4447663/normal_602b28c187322.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://midevodimu.pbworks.com/w/file/fetch/144450486/52539945447.pdf
    • http://wiwedano.pbworks.com/w/file/fetch/144425352/14446741417.pdf
    • http://supatibu.pbworks.com/w/file/fetch/144418992/how_to_cheat_coins_in_subway_surfers.pdf
    • https://uploads.strikinglycdn.com/files/4176ef19-85cd-4fc4-9fc0-23e4993f3feb/griffiths_quantum_mechanics_solutions_3rd_edition.pdf
    • http://xojifot.pbworks.com/w/file/fetch/144426669/zoriku.pdf
    • http://sovafiben.pbworks.com/w/file/fetch/144543324/24680124735.pdf
    • https://uploads.strikinglycdn.com/files/43da48c0-b3b4-43dc-8bf0-d04e2307cd07/craftsman_evolv_18v_battery_charger.pdf
    • https://uploads.strikinglycdn.com/files/3e4660cd-5ba9-43ff-adb4-e9b3be571fe8/mebidakor.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_off0001076a.bin
4605aeac34536e8e37f7c4178e6eb0cbbb4bc8a56982b270940270ea9377865b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1076A 5144 bytes
font_01_sfnt_off000118dc.bin
d0b7d4cebdd3938e67b515fc18dd028ae4fcdb94d2f09fd518a82b831cc626aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118DC 10712 bytes

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