Malicious PDF — malware analysis report

Static analysis result for SHA-256 f47579a16a85f55f…

MALICIOUS

PDF

80.4 KB Created: 2021-03-23 00:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d96382d2e492e7c7dde017f6c3bf70c3 SHA-1: 496819d78bd858b43cb6b8c2354013c7efb01ba2 SHA-256: f47579a16a85f55f27cade454715442525c3a7dc5605abdf89736f47bfa7de42
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL leading to a site that appears to be a phishing lure disguised as a Bible download. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/strik?utm_term=audio+bible+english+standard+version+download
    • https://bakubirusi.weebly.com/uploads/1/3/4/6/134680497/detakojiwom.pdf
    • https://fapopadiwa.weebly.com/uploads/1/3/1/4/131438416/696541.pdf
    • https://bavalezamo.weebly.com/uploads/1/3/4/7/134749705/3321036.pdf
    • https://lidanoliki.weebly.com/uploads/1/3/1/3/131380598/5287109.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/abcedc9f-6df8-451f-9445-9da0c4a67205/55281389863.pdf
    • https://s3.amazonaws.com/kufazete/mechanical_drawing_notes.pdf
    • https://s3.amazonaws.com/mefadedosuw/ctet_answer_key_2019_set_q.pdf
    • https://f405dec1-7f90-4f4c-a861-5286f67d0127.filesusr.com/ugd/ab922d_ea77c64d6dd7426893c3c5c8b70c055a.pdf?index=true
    • https://s3.amazonaws.com/gisujubolidine/25089363263.pdf
    • https://uploads.strikinglycdn.com/files/c4659216-1a95-4c0d-bda3-89eeb0d549f9/mabasomalo.pdf
    • https://uploads.strikinglycdn.com/files/68f89cd9-e02f-4515-b06d-08bf8a7ef8f6/lofugizanixokalabuj.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/how_to_program_garage_door_opener_without_learn_button.pdf
    • http://getudiweseka.epizy.com/94135374544.pdf
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_b157ff21d04e44eca793fe0c33727cd8.pdf?index=true
    • https://s3.amazonaws.com/vizegemawokaxe/wenakaro.pdf
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_848d7df8a5d7442e914201c5a199d336.pdf?index=true
    • http://winewododures.epizy.com/24308312372.pdf
    • https://s3.amazonaws.com/kevava/65363435816.pdf
    • http://dozonox.epizy.com/fundsmith_equity_fund_i_class_accumulation_factsheet.pdf
    • https://9f9bd9fa-00fe-4673-b34e-9a629881f524.filesusr.com/ugd/09273f_404781d7464042988341263ddbbbe180.pdf?index=true
    • http://rilimopukalus.rf.gd/73797747758.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e872.bin
110d112edf0ee296f55575086ffe12803ce01b658295dd4d586e09fad9a7cedd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE872 5624 bytes
font_01_sfnt_off0000fbcf.bin
e5d9c831d740cc26f2425881cc86348d81b5c9efa35d3083e51b0483188dc277		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCF 5368 bytes
font_02_sfnt_off00010e1a.bin
a477c0d1082dedf140849636668cd2852130c9fdf53b594f5393724292449b8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1A 10296 bytes

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