Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d1ad8060c46c136…

MALICIOUS

PDF

79.0 KB Created: 2021-04-05 16:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc8c544da02327b6cc5e4a2a319ae20a SHA-1: d88a5be2531938721b6dfbc110c0776b8f31b6b2 SHA-256: 6d1ad8060c46c1360d40f63f5792d1e3aba60c54aed01d3e99bd3a347873dc2b
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is malicious and a phishing attempt. It embeds external URIs, with the primary one being 'https://nipisod.ru/strik?utm_term=2000+ford+ranger+2.5+l+oil+capacity', which is likely a lure. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

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://nipisod.ru/strik?utm_term=2000+ford+ranger+2.5+l+oil+capacity
    • https://cdn.sqhk.co/mumepefofise/dierO8B/resident_evil_animated_movies_in_order.pdf
    • https://kurepisafigovu.weebly.com/uploads/1/3/1/3/131398088/bdad320e7bf5.pdf
    • https://cdn.sqhk.co/raxedaninaso/hjgfgg0/73920276411.pdf
    • https://cdn.sqhk.co/berirenike/bSbiLgc/farijelanurov.pdf
    • https://zopojezumaze.weebly.com/uploads/1/3/1/6/131637354/gagafe.pdf
    • https://zagodifibom.weebly.com/uploads/1/3/0/7/130775293/4274032.pdf
    • https://momigetufi.weebly.com/uploads/1/3/4/8/134876151/b4ae6d49df2564.pdf
    • https://nilijinaxobizag.weebly.com/uploads/1/3/4/3/134356504/durubefazameto_vavijetumav_bekevigit_malovolujivak.pdf
    • https://cdn.sqhk.co/woberimi/DggzWhh/rebupuzuzed.pdf
    • https://cdn.sqhk.co/gerukoso/2jhAD7r/happy_birthday_video_song_free_mp4.pdf
    • https://kanumipiga.weebly.com/uploads/1/3/5/3/135346224/rejizozavezirikazil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zaxawogaxema.epizy.com/simplifying_complex_numbers_independent_practice_worksheet_answers.pdf
    • http://gokojap.epizy.com/under_the_dome_season_2_episode_6_recap.pdf
    • https://s3.amazonaws.com/jusuberu/android_aosp_source_code.pdf
    • https://s3.amazonaws.com/tokudapele/34216983575.pdf
    • https://s3.amazonaws.com/vibasujefir/45868668633.pdf
    • https://s3.amazonaws.com/tuzamada/naina_full_song_mp4.pdf
    • https://s3.amazonaws.com/saziwijaxodav/krk_rokit_5_g3_vs_jbl_305p_mkii.pdf
    • http://gujugune.rf.gd/83158043273.pdf
    • http://jekidosokun.epizy.com/cen-_cenelec_guide_32.pdf
    • http://wepuwuzuvam.epizy.com/83934159968.pdf
    • http://kibulirol.rf.gd/96561598129.pdf
    • http://nodefojabotozij.rf.gd/kafad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e633.bin
99f7694dba7ef4b3b2e70e31eafa962b9a461aaa6a66854847ff047424ceaeb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE633 5372 bytes
font_01_sfnt_off0000f884.bin
bb592014559fbc0ebea9574130256245bb417b8719adcb3f5b2f0a64452eb175		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF884 11140 bytes
font_02_sfnt_off00011e5d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E5D 4324 bytes

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