Malicious PDF — malware analysis report

Static analysis result for SHA-256 003c57328187cb69…

MALICIOUS

PDF

74.0 KB Created: 2021-06-01 02:31:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afadab78227a6598cc3939c6f3d3e154 SHA-1: 71c4ced1c60c75991029237defe4940a337dffaa SHA-256: 003c57328187cb693bd106a3e73b655fe888ea93d7330894324226a17804360e
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms and phishing. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests a scam, likely involving fake prizes or parcel delivery. The presence of embedded URLs and the ML classifier's high confidence further support a malicious classification. No scripts were extracted, but the document structure and heuristics point to a phishing or advance-fee scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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.
  • 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://irlanc.ru/pbw?utm_term=helene+hadsell+book+pdf+free
    • https://cdn-cms.f-static.net/uploads/4454287/normal_6015c6166f606.pdf
    • https://nigizamizu.weebly.com/uploads/1/3/4/3/134319440/nagenivabideme.pdf
    • https://foxogitasi.weebly.com/uploads/1/3/2/7/132740511/4122667.pdf
    • https://cdn-cms.f-static.net/uploads/4494681/normal_6052c6e2d3bb3.pdf
    • https://cdn-cms.f-static.net/uploads/4379851/normal_5fd296fbecd2f.pdf
    • https://cdn-cms.f-static.net/uploads/4368989/normal_602291810a5f8.pdf
    • https://cdn-cms.f-static.net/uploads/4413718/normal_604875dc51dca.pdf
    • https://sokijolixorinus.weebly.com/uploads/1/3/1/1/131163896/799298c79fe846c.pdf
    • https://cdn-cms.f-static.net/uploads/4475987/normal_5fd671002ada4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cda5b234-83ab-42d8-88e0-05d7caf24ed4/federalist_70_arguments_quizlet.pdf
    • http://pokuwatosat.pbworks.com/w/file/fetch/144434019/tobinebibi.pdf
    • https://uploads.strikinglycdn.com/files/0ccb8e1c-60b7-485c-bd9a-d7e12fe46b54/geometry_worksheet_congruent_triangles_3_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/ef182a04-e2e4-46ac-85ec-489bb032c004/42282271435.pdf
    • https://uploads.strikinglycdn.com/files/bebd6555-0de9-4ae7-90c4-7aea00abda7f/vw_tiguan_transmission_oil_change.pdf
    • http://tazijebep.pbworks.com/f/how_to_replace_thermal_fuse_on_amana_gas_dryer.pdf
    • https://uploads.strikinglycdn.com/files/3ef0a98a-feea-4ccd-9895-78de76666f27/dujisuvizigowamon.pdf
    • http://buvavipoluvu.pbworks.com/w/file/fetch/144424434/debajenebejibipipexomuge.pdf
    • https://uploads.strikinglycdn.com/files/30b3f248-a189-4c41-a3d3-78d22383eb23/perfect_puppy_in_7_days_van_sophia_yin.pdf
    • https://uploads.strikinglycdn.com/files/4c5cd5cd-4bf4-4c2a-9988-3b41e1161d26/how_much_does_a_hague_water_softener_cost.pdf
    • https://uploads.strikinglycdn.com/files/93bb63b2-6371-4c1b-8032-6bb8f60fabc4/puzarenenuno.pdf
    • http://kedetuwi.pbworks.com/f/athulitha_baladama_hanuman_chalisa_lyrics_telugu.pdf
    • https://uploads.strikinglycdn.com/files/60c27671-be04-435f-a323-55d08c117a30/lugux.pdf
    • https://uploads.strikinglycdn.com/files/d98ccb28-2a32-4001-a921-2dc251783ff0/jetafafivobuzojoropitu.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_off0000e112.bin
78ccd093c8242968ca83504aa5c03d0f5bca6ec2f52b57ee6b3b02acffdd0827		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE112 5296 bytes
font_01_sfnt_off0000f300.bin
44ea8eaa18f8a60d9eb6b349f1e9979c1072d6cf8d8b40ce65a1218b3e5bf3f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF300 11152 bytes

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