Malicious PDF — malware analysis report

Static analysis result for SHA-256 4215aad25d99dfa3…

MALICIOUS

PDF

79.8 KB Created: 2021-03-10 20:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e76854adace7dcd2c04a31d3ad07d4c8 SHA-1: 350b99bd03a78f4097900e87f1adc957656ad590 SHA-256: 4215aad25d99dfa3926d55e54f3ea26c3d1dd79d35a544e8e23972689ed3179b
164 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, suggesting a link farm or redirection strategy to host malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'statement of faith examples', combined with the 'SE_INVOICE_LURE' heuristic, points to a social engineering attempt to trick users into clicking embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://vilenefex.ru/wix?keyword=statement+of+faith+examples
    • https://cdn.sqhk.co/kepilujofeje/duighjW/78428147041.pdf
    • https://wetogukonitama.weebly.com/uploads/1/3/3/9/133997956/mafawasiwudej-zipiguzi-dagew.pdf
    • https://rudiduwusoxu.weebly.com/uploads/1/3/4/4/134445317/kosumiwe.pdf
    • https://cdn.sqhk.co/matajikiwov/gdjAgg8/61808314546.pdf
    • https://cdn.sqhk.co/dukoredod/eHVVgd6/bifexikatazatabugomok.pdf
    • https://dozexida.weebly.com/uploads/1/3/4/5/134590021/gapekasu.pdf
    • https://cdn.sqhk.co/wifilivemij/e9jja7R/fepoxabikuv.pdf
    • https://nosovaranipad.weebly.com/uploads/1/3/4/7/134743093/pedapejivebin.pdf
    • https://cdn.sqhk.co/gorokipo/dufbhjo/gas_station_fake_card_reader.pdf
    • https://mabalavorejeg.weebly.com/uploads/1/3/4/7/134769590/6535332.pdf
    • http://tesubozapo.22web.org/35353633513.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://edcb5511-827b-40b0-97c1-3499c313f96b.filesusr.com/ugd/0779a3_6471a146d0454e2a9f3ad6adf48fb676.pdf?index=true
    • http://xarozitapakegur.epizy.com/50916429904.pdf
    • https://650c977b-0274-48a2-8498-43c0efc39f4e.filesusr.com/ugd/dbad32_d96989f97a3c41f3abeaea38befdd921.pdf?index=true
    • https://s3.amazonaws.com/numegubowalonan/migogewidijagaj.pdf
    • https://uploads.strikinglycdn.com/files/9977bc4d-b5a9-47de-a9ae-0b72aa8d708e/71562250727.pdf
    • http://zifopodisinuri.rf.gd/53445023092.pdf
    • https://uploads.strikinglycdn.com/files/92cd8a94-795a-4252-add7-f03fd3af38fd/45967011057.pdf
    • http://buxidogekalor.rf.gd/canadian_cardiovascular_society_atrial_fibrillation_guidelines_2016.pdf
    • https://60659a61-a27b-47ea-8eac-a81775c62269.filesusr.com/ugd/7a7fb1_af92527502354da79b296c60206dd292.pdf?index=true
    • http://megutid.epizy.com/jidekedowiwiborap.pdf
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_dfc4801d026e479c89e1dd66c00362d1.pdf?index=true
    • https://5c839259-519f-4cee-a1a2-6639d654070b.filesusr.com/ugd/140efa_1659b67df81f4cbb8f8754052fc99c86.pdf?index=true
    • https://s3.amazonaws.com/xewamejixolefaj/traductor_de_espaol_a_ingles_google_gratis_traducir.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_off0000fb0f.bin
ce642266117756634605871c4bc0b3324488d4976cafe143e3748d1154b88221		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0F 5216 bytes
font_01_sfnt_off00010cb6.bin
1689e1a281fa15c889ba1248531a6c6ba4008d8fbb770279e4e7d3d785a7ce90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB6 10936 bytes

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