Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d14cc86868700ac…

MALICIOUS

PDF

82.7 KB Created: 2021-03-31 17:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6ed78e50d23cf184ac860a1f70c5f7e8 SHA-1: e0566aca8f43cf37f6200ca014902dae63f2e959 SHA-256: 2d14cc86868700ac1d3361a2fe4d631ac78e617d81b89e78ef1c0c850322fa29
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many pointing to disposable hosting, and a specific URL is associated with a lure for an 'Ignou b. ed convocation application form'. The presence of external URIs and a link farm suggests an attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/123?utm_term=ignou+b.+ed+convocation+application+form PDF link annotation
    • https://farunigi.weebly.com/uploads/1/3/4/7/134716297/roxaz.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://petonopelun.iblogger.org/bittorrent_gratis_para_android.pdfIn PDF document text
    • http://chempion.coffee/34393018603k97nw.pdfIn PDF document text
    • http://anyita.space/how_to_turn_off_bottom_ice_maker_samsungmr46e.pdfIn PDF document text
    • http://sportita.fun/best_sheet_music_for_piano_beginnersyay0w.pdfIn PDF document text
    • https://konozobit.weebly.com/uploads/1/3/4/4/134456152/wodajifav.pdfIn PDF document text
    • http://supfitket.buzz/zilexosasatnvdw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lafojagifod.epizy.com/73576647389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd88405-4c46-48b6-a670-11e5cdd37570/suvegupilaso.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/wanas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5be50662-ef0a-4e9b-803a-1d3aa035d551/17074572109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63055ba7-cf7f-4e0a-94c5-0067351aa3a2/77056260561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b783561-e999-4b60-be2a-2c1b68ddfb99/gospel_of_wealth_andrew_carnegie_sparknotes.pdfIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_4687ecfb933747c09893d1921b4f5d95.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/887d3875-b6d9-4219-afd3-2a8cd46e1b3d/junewibemaxejeditigudujod.pdfIn PDF document text
    • http://siwofemevap.epizy.com/liboxuwadakemikob.pdfIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_43ba31cdb662429dbd4c440274a39660.pdf?index=trueIn PDF document text
    • https://1b6fe947-be7e-4494-9a94-f566f178d3d1.filesusr.com/ugd/89064d_76bfaba80f3940209b741104aeb76299.pdf?index=trueIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_963d1d0c500042b9871e1e852f557640.pdf?index=trueIn PDF document text
    • https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_acc1538780284d609afc0d6448910a30.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/samsung_galaxy_tab_e_sm-t337a.pdfIn PDF document text
    • http://deravamosu.rf.gd/zorapudaveputavofuna.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF9 5468 bytes
SHA-256: 91c26c78e6fd9d45fb8905905abf79d573f61a573389e60b841c7820a3e1f496
font_01_sfnt_off0000fd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8E 11740 bytes
SHA-256: b8dc064bd8babcca73e39ec09d7785a0d7506428cba76c11db9d0c8a072939dc
font_02_sfnt_off000125cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125CD 16140 bytes
SHA-256: 2732c78df68b4531e26da51a256f0f9ab881cb8a96d1886ade34872d88eeece3