Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b77349ae23ec8a7…

MALICIOUS

PDF

75.1 KB Created: 2021-05-11 16:29:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 828cc77e68587a32463a044fcb8131d4 SHA-1: b0fbc9bf5cc85f92e479bba1b3b6ae333ae725be SHA-256: 3b77349ae23ec8a76d3ba8da38eed47a2b3920a3834c84111f7d734dbe32e588
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though partially corrupted, suggests a lure related to product information, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://vilenefex.ru/strik?utm_term=how+long+does+hero+8+battery+last
    • https://sugulidan.weebly.com/uploads/1/3/4/5/134508933/dc6bdfe45cab3.pdf
    • https://sorasewemo.weebly.com/uploads/1/3/4/3/134358680/d3175afdf17.pdf
    • https://pagukusiko.weebly.com/uploads/1/3/4/6/134631218/0e78542222eeb22.pdf
    • http://steblin.pro/xobogiroa0bq.pdf
    • https://cdn-cms.f-static.net/uploads/4483349/normal_6024f6f0ba7a5.pdf
    • http://nubolutlion.xyz/mifogoz8ciu.pdf
    • http://sokolov.fun/tinkerbell_and_the_pirate_fairy_movie_download_in_hindi_hdb78go.pdf
    • https://cdn-cms.f-static.net/uploads/4448539/normal_602783351f860.pdf
    • https://vanixegufewip.weebly.com/uploads/1/3/4/5/134511125/fonugog.pdf
    • https://cdn-cms.f-static.net/uploads/4370057/normal_5fd7a9485f326.pdf
    • https://visofamawuri.weebly.com/uploads/1/3/2/3/132303269/pigovamavulanejiju.pdf
    • https://vojituletakez.weebly.com/uploads/1/3/0/8/130874409/4012950.pdf
    • https://cdn-cms.f-static.net/uploads/4459337/normal_600e681cdc51e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dowesitobuga/moguloteko.pdf
    • https://uploads.strikinglycdn.com/files/9a0f4ff0-ef5a-4764-9963-5aedcbff8f3d/73420240730.pdf
    • https://uploads.strikinglycdn.com/files/e7bd0543-afb1-4bb6-b965-02e871560a5e/sony_a230_camera_price_in_malaysia.pdf
    • https://uploads.strikinglycdn.com/files/bfdbb16f-500c-4224-bdbf-3b6a07641070/what_is_evening_primrose_oil_pills_used_for.pdf
    • https://uploads.strikinglycdn.com/files/6a368d31-f9f0-430a-9502-f01750bf07bf/xadopomasila.pdf
    • https://s3.amazonaws.com/lazolu/gararupekaxeru.pdf
    • https://s3.amazonaws.com/lowebemuwojiso/xosuvetotatokuzaguzuzeki.pdf
    • https://s3.amazonaws.com/teximikamukubo/zepekivogigupegujuf.pdf
    • https://s3.amazonaws.com/dozore/fibavanibok.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_off0000e584.bin
b2f67ccfa8df25cbd68140efebf4a595622775fb3f93206e56149e7c8046d7e7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE584 5576 bytes
font_01_sfnt_off0000f886.bin
ac84fdd9bd4d801d6fbcd5aca1a19dd78a2c67809e0b73b4bdc8a2b4b6a38625
pdf-font-stream PDF embedded font (sfnt) at offset 0xF886 10668 bytes