Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3e951337e8e484…

MALICIOUS

PDF

70.7 KB Created: 2021-04-04 15:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bebadcda7e3853182dd8157e4701ef7 SHA-1: 58354803cde32e29c579db23e4d426b6668110e0 SHA-256: 3a3e951337e8e484acfe4a0498f4531a7da45b2a0e390803e29b384a4cb7b585
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a phishing site disguised as a setup guide. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external URIs and the overall classification suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/strik?utm_term=how+to+setup+insignia+converter+box
    • http://verifybadgehelp.com/79709247339grm8f.pdf
    • http://bristol-yalta.run/pimapisiminin5wpht.pdf
    • https://static.s123-cdn-static.com/uploads/4392210/normal_60062a665f67b.pdf
    • http://nulupupekoxekam.22web.org/nibowaf.pdf
    • https://cdn-cms.f-static.net/uploads/4455174/normal_5fdb9aed402c2.pdf
    • http://ontrade.top/582697522301whfp.pdf
    • http://deemonatrafik.xyz/94183873261mzkj.pdf
    • http://silvanozito.online/golf_on_marsxfzk7.pdf
    • https://cdn.sqhk.co/vilomikov/jhmNSig/87929298243.pdf
    • https://cdn-cms.f-static.net/uploads/4481168/normal_6033384a9b760.pdf
    • https://cdn.sqhk.co/jojojidatun/jPIyghA/kasinumena.pdf
    • https://cdn-cms.f-static.net/uploads/4497688/normal_60303a7bf3791.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b70db109-e22d-49f5-83cd-85d2e1ca047a/how_to_replace_honeywell_pro_series_thermostat_battery.pdf
    • https://uploads.strikinglycdn.com/files/1468b6d0-b045-4d19-95b3-6f02171ac6e1/national_highway_safety_administration_discount_code.pdf
    • https://uploads.strikinglycdn.com/files/0c790a57-d56f-431e-9b86-1feb3038d182/the_raven.pdf
    • http://zotavoje.rf.gd/xda_developers_lg_g2_mini.pdf
    • http://vaxofijuj.epizy.com/72975214913.pdf
    • http://denufesavamazej.epizy.com/nopoxizuvexapugi.pdf
    • https://uploads.strikinglycdn.com/files/2fbe8a62-2686-4069-ae17-171c17691fa4/97164733465.pdf
    • http://sokiguxesixup.epizy.com/fopedupusanodebukot.pdf
    • https://uploads.strikinglycdn.com/files/a80b2427-a114-44cf-a9bb-f520502fe231/83886977533.pdf
    • https://uploads.strikinglycdn.com/files/1998ecd1-e89d-4174-874d-ff9ded0889fd/vector_calculus_5th_edition_solutions.pdf
    • https://uploads.strikinglycdn.com/files/227462d0-f572-4ef0-8f56-3e4d9865cbff/hp_laserjet_1320n_test_page.pdf
    • https://uploads.strikinglycdn.com/files/3b5cfa12-8d3e-4c6b-a3f9-ab370b6ad273/86197453365.pdf
    • https://uploads.strikinglycdn.com/files/944f2da6-618f-414e-a349-9653cac639eb/mugelonupumotisix.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_off0000d61f.bin
63d57e0e1e128db226f546ff9178033a192a1269967bcba6fabba9c3e28d8899		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD61F 5392 bytes
font_01_sfnt_off0000e89e.bin
6a24ad9a30366a7ad697f3c99bd746ff8c4b56ecfe3e35e48ee276300da40639		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE89E 10724 bytes

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