Malicious PDF — malware analysis report

Static analysis result for SHA-256 faab56f5968b46ef…

MALICIOUS

PDF

86.1 KB Created: 2021-03-16 04:24:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b756f68ca0e9929f5682822978fa08de SHA-1: 4ee30ca5b5e7b0897dcd47732374a3c33582ae2f SHA-256: faab56f5968b46efe584c6a0dadd6c2b34d40aeacc17f285b9468892a40745f6
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, indicating a phishing attempt. The embedded URL points to a suspicious domain, likely serving a malicious payload or redirecting to a phishing page. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit vulnerabilities or trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/123?utm_term=adverbs+of+frequency+exercises+intermediate+pdf
    • http://jejunobu.iblogger.org/79330005531.pdf
    • https://fejufawos.weebly.com/uploads/1/3/4/3/134328201/3638316.pdf
    • https://cdn.sqhk.co/jumifokujuje/zhaliak/gemabinozibi.pdf
    • https://cdn.sqhk.co/podiwilur/bVjiiiN/dipaj.pdf
    • https://pabimoju.weebly.com/uploads/1/3/3/9/133997489/75df5ad6e02eb1.pdf
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/dukodulefowa_ketebuweb_lamewopi_bukesosixamo.pdf
    • https://kuxiwapanipajof.weebly.com/uploads/1/3/0/9/130969705/926e92d2ae.pdf
    • https://cdn.sqhk.co/jogujufuza/ZnoyzHt/chicken_run_windham_ny_car_show.pdf
    • https://ligonulijer.weebly.com/uploads/1/3/5/3/135318365/7777fe2.pdf
    • https://cdn.sqhk.co/zaxuloxedu/qjjAnid/call_recording_app_for_jio_phone.pdf
    • https://cdn.sqhk.co/wufevinek/oZohenH/guy_pressing_red_button_meme.pdf
    • https://sabutiwageb.weebly.com/uploads/1/3/5/9/135992853/lakigezewija_xifozukojamo_todunuse.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a03a6ec4-d7c3-4a95-a45b-2ee0d6360525/vovato.pdf
    • http://dogugamegomijit.rf.gd/menarukuguvimerop.pdf
    • http://maretazijedoval.epizy.com/84713927289.pdf
    • https://uploads.strikinglycdn.com/files/b812eeb9-f3b6-4962-b41d-7a4cc2d1db69/are_you_supposed_to_bounce_the_ball_in_beer_pong.pdf
    • https://uploads.strikinglycdn.com/files/bb7101fa-7e7d-446d-a874-8b5cb95bb57e/borujiligu.pdf
    • https://uploads.strikinglycdn.com/files/a7d2d445-99cc-4dbd-a140-16aa8bffdafc/pisikovufiwunowuxebe.pdf
    • http://lopumupukerodu.epizy.com/vegetable_spring_rolls_nutrition_information.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f577.bin
34ed4822c7a0e38b27f045ed5c4b845394f578ff3870e402797d455905eccc8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF577 5752 bytes
font_01_sfnt_off000108fe.bin
29ffc5eaf726611a1b1516336dedfe76e00d52928fc2a7094294f6e3fb75705f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108FE 12744 bytes
font_02_sfnt_off00013243.bin
610bd6decb120980f6fbc99032736eab497abd3bc96e261875981f96432278ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13243 16568 bytes

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