Malicious PDF — malware analysis report

Static analysis result for SHA-256 b79bfe4cbc0c3bea…

MALICIOUS

PDF

81.4 KB Created: 2021-03-14 13:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: af530b2f85ca7fe84e397fd684ba3c15 SHA-1: 55fe9b60392e74391e7826de2267fdfef285c243 SHA-256: b79bfe4cbc0c3bea9a451042a58d5656e2c2463e345b219af6c407a2ed8768a4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://zajinet.ru/123?utm_term=invesco+perpetual+corporate+bond+factsheet PDF link annotation
    • http://gudokav.sportsontheweb.net/22678291560.pdfIn PDF document text
    • http://fexevewuli.mypressonline.com/38266152076.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407303/normal_5fdedee7c27eb.pdfIn PDF document text
    • http://sbrf.link/joe_michaels_photography2sdzu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425929/normal_5ff52500cc10d.pdfIn PDF document text
    • http://sukutoxuwurif.mywebcommunity.org/instruments_in_the_redeemers_hands_facilitators_guide.pdfIn PDF document text
    • http://bewizasosu.sportsontheweb.net/mitenijopitovodexa.pdfIn PDF document text
    • http://pipvip.ru/bosegv8ea7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447916/normal_5fe062ecdc384.pdfIn PDF document text
    • http://duvikerogene.iblogger.org/pipafawitaxor.pdfIn PDF document text
    • http://cetop.xyz/96042618948z2umw.pdfIn PDF document text
    • http://zuvowizetigeko.22web.org/clash_of_clans_hack_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tomamujuf/battle_dogs_mafia_war_game.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/4729017205.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/android_auto_apps_video.pdfIn PDF document text
    • http://dupumimegijema.epizy.com/mimakutadunoli.pdfIn PDF document text
    • http://xonefepuvimami.epizy.com/delolodawiganuzise.pdfIn PDF document text
    • http://terumalok.atwebpages.com/8040963439.pdfIn PDF document text
    • http://fujesotes.epizy.com/boyarsky_java.pdfIn PDF document text
    • http://renulekefa.epizy.com/ninja_build_system_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/43871720869.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/70329299624.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF182 5212 bytes
SHA-256: 1267cb02adb28165729bb314e44851d10825caa5938a01902aaae173f0e332f6
font_01_sfnt_off0001032b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032B 11492 bytes
SHA-256: fc2fc8ef672c89dea86be9f46a0236b2058cf5e22a469113b85752b5f149e6d2
font_02_sfnt_off00012a2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A2A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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