Malicious PDF — malware analysis report

Static analysis result for SHA-256 82246cd0603c451f…

MALICIOUS

PDF

68.4 KB Created: 2021-03-14 15:22:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b66a6199a913203c2917c589e826336 SHA-1: 1265257edd8768aedbd7e27ec621caa8b9caf2f7 SHA-256: 82246cd0603c451fe0ab7fef63ee55d5f6df8528f686f9c9c2e1f159f9671b45
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and numerous external URLs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dafemum.ru/wix?keyword=chartres+cathedral+ap+art+history+khan+academy
    • http://plusstore.pro/george_foreman_indoor_grill_instructions0t24s.pdf
    • https://pitinolulisam.weebly.com/uploads/1/3/1/3/131381612/sipogexafofulonode.pdf
    • http://tisiner.iblogger.org/armstrong_cable_meadville_pa_tv_guide.pdf
    • http://kaverijamawe.iblogger.org/malayalam_calendar_2020_december.pdf
    • http://sizegivip.22web.org/4182951644.pdf
    • https://fejuzewe.weebly.com/uploads/1/3/4/8/134883228/doxavuvonudo_vepizelad_dixisunazezukar_zuwuxezadew.pdf
    • https://pituxujufu.weebly.com/uploads/1/3/1/8/131856071/5497068e.pdf
    • http://pornbustyvids.com/honeywell_focuspro_5000_problemsy66jt.pdf
    • https://xaxazusilu.weebly.com/uploads/1/3/4/7/134757455/voninigogek.pdf
    • http://housefashion.ru/how_riddex_plus_worksogxzw.pdf
    • https://suzavopuwo.weebly.com/uploads/1/3/4/6/134686694/lobija.pdf
    • https://xidelesa.weebly.com/uploads/1/3/4/4/134498911/ab368c823.pdf
    • https://revogofoti.weebly.com/uploads/1/3/3/9/133999152/muzixogixoramozefalu.pdf
    • http://vashobereg.com/26799926386v4d47.pdf
    • https://fuwiwidiwijidex.weebly.com/uploads/1/3/1/6/131637339/01dadf1.pdf
    • http://xawinagolagiju.iblogger.org/a_a_p_ka_full_form.pdf
    • http://fastpeysistem.online/tafuratotivesikugaxuzodu53ve3.pdf
    • https://jevezorubik.weebly.com/uploads/1/3/4/8/134864628/cb80ad40d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lidekajemunow.epizy.com/13514015557.pdf
    • https://e2604e0b-f95a-4acb-b53f-a7db3827b2a1.filesusr.com/ugd/225520_8590c7ea440e4fb9838e9086254252d9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/44e4979d-ccbe-43bb-a736-0880c4a113c3/how_to_host_a_book_club_on_zoom.pdf
    • https://uploads.strikinglycdn.com/files/5a1b5a9c-46d9-4127-a0ad-d60d7b0cbd32/wufumepijup.pdf
    • https://uploads.strikinglycdn.com/files/e031a02c-6964-4147-9a9f-d3d5e7917d5f/pebamafivexilegu.pdf
    • https://ed7c5604-ec0f-4ae6-9d22-6d534b57d154.filesusr.com/ugd/1d5a3f_e42bdc93ab3b4fb38bf61bbf3fff5e52.pdf?index=true
    • https://cb8582fb-ab29-4f13-bfd4-623ca244ab52.filesusr.com/ugd/d61b30_6c818f75f8774ce98eccc5d17d352b3f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1747e4bf-9f70-412c-a24b-2bfc38a7d7a8/league_of_nations_response_to_japan_invading_manchuria.pdf
    • https://uploads.strikinglycdn.com/files/14d9539a-ceb9-43b4-8350-995321dff30b/95319871630.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_off0000ccbc.bin
746a9a5bea7fb1602670b1313c840f7b8c8cf0b0b1ad0feedd602238556e56af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBC 5384 bytes
font_01_sfnt_off0000dee4.bin
4736b0f3ab25286f47b419ae8b1442a39ee433c5894b0432280f583a1dae7fdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE4 10288 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.