Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d15196da8269888…

MALICIOUS

PDF

81.8 KB Created: 2021-03-30 15:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf023eabc7a4d848a6a3b504806b91ff SHA-1: 4f2b6ef4485b5ee5c4f5d2a47670665619d7ca0c SHA-256: 3d15196da82698887f2e4a869f96fab5cf42ec0776cdac0774109e29a7b2fffd
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as 'Pdf.Phishing.Trojan'. The embedded URL 'https://xajibur.ru/award?keyword=certificat+de+vente+cerfa+pdf' strongly suggests a phishing attempt related to a sales certificate. The document body, though partially garbled, contains keywords related to the URL and PDF metadata, reinforcing the phishing lure.

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://xajibur.ru/award?keyword=certificat+de+vente+cerfa+pdf
    • http://sekatiduzogi.22web.org/nexiroxiga.pdf
    • http://ekzo-fruit.ru/fasebotalowubaz5nejx.pdf
    • http://opendouche.xyz/858383864842bj1j.pdf
    • https://cdn-cms.f-static.net/uploads/4476596/normal_604ab47ee85e4.pdf
    • https://static.s123-cdn-static.com/uploads/4373770/normal_60041d511aadd.pdf
    • https://cdn-cms.f-static.net/uploads/4466364/normal_603be824dda05.pdf
    • http://wersita.fun/171856588225n4v5.pdf
    • http://kuroramogesok.iblogger.org/ultratech_im-_1270_datasheet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zodenowukafowe.rf.gd/guia_ceneval_psicologia_contestada.pdf
    • https://uploads.strikinglycdn.com/files/acc4f0e0-29ef-4ba6-b5ba-c7972e60e54d/4894953915.pdf
    • https://4b0cdf75-2e42-4830-99f1-bbdbaec3f661.filesusr.com/ugd/891219_4c1c86fe486449338c96a98cb18f0c22.pdf?index=true
    • https://s3.amazonaws.com/tumuzu/42974158001.pdf
    • http://lipubumili.epizy.com/transformers_3_characters_autobots_and_decepticons.pdf
    • https://29474179-7c7c-44ae-84e0-3c37792f2e25.filesusr.com/ugd/7f817d_e776ea6772a64a7cb38dcb6e311b6f83.pdf?index=true
    • http://ruwitubis.rf.gd/canoscan_lide_220_user_manual.pdf
    • https://s3.amazonaws.com/bejexe/jalinafuduwekaduxexubakog.pdf
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_b75569d329e04988b68af44c96bdcac7.pdf?index=true
    • https://s3.amazonaws.com/zabejuvijolu/pubanotexa.pdf
    • https://uploads.strikinglycdn.com/files/224d1441-843a-4e84-9f0d-bd54e4879e3a/how_to_pair_iworld_wireless_headphones_sony.pdf
    • https://8ed7ad90-0d0e-491f-9c15-1f6cd5a61d18.filesusr.com/ugd/f1a804_1409f6c4face4b45bd97b7d9eb7ced10.pdf?index=true
    • https://s3.amazonaws.com/taguxif/65551947878.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_off0001000e.bin
cc641c8ef1367cbf7cefd4ad35c6f9791391e6ec7f35d18b1593a2679deee313
pdf-font-stream PDF embedded font (sfnt) at offset 0x1000E 4904 bytes
font_01_sfnt_off000110d4.bin
637965222b2902c752671ff38817c4650aaece428a552f75f91023bd96f0d475
pdf-font-stream PDF embedded font (sfnt) at offset 0x110D4 12412 bytes