Malicious PDF — malware analysis report

Static analysis result for SHA-256 824f2b929a6b939e…

MALICIOUS

PDF

86.4 KB Created: 2021-05-08 00:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8525e865ecab3a2a4aba724bfcfe67ad SHA-1: 0b6f2dbb978be139b676a3a871de31949972727a SHA-256: 824f2b929a6b939ec6be954e2f988bb6532761ea611c56e77ccde464a4cf57f4
96 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 an embedded URI pointing to 'https://zajinet.ru/strik?utm_term=how+to+make+a+photo+collage+in+procreate', which is likely a lure to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a harmful resource, consistent with a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/strik?utm_term=how+to+make+a+photo+collage+in+procreate PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450732/normal_60435c57bd297.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/hgjiyJX/broken_heart_3d_drawing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412889/normal_5fe9926939b7b.pdfIn PDF document text
    • https://cdn.sqhk.co/soribivevi/cgjgfjj/areal_pyramide_formel.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/geZ3TiY/octopus_thigh_tattoo_girl.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/kjbjjhg/iphone_software_update_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/pilupenemima/hhjiIgc/titan_quest_anniversary_edition_cheat_engine.pdfIn PDF document text
    • http://lezapogogaz.iblogger.org/18913517227.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/dibgjj4/bbq_restaurant_near_me_that_delivers.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/AggGhfB/baby_talking_aadhya.pdfIn PDF document text
    • https://cdn.sqhk.co/fezifoxunif/hcihjey/zombie_run_game_see_zombie_in_real_world.pdfIn PDF document text
    • https://cdn.sqhk.co/belesobikezi/Pjft2ih/extreme_landings_mac_full.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/0hdCE0Z/basic_marketing_strategy_ppt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gekazez.epizy.com/rawidemugipinifamopovi.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/tunidovobib.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/39255666432.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/examples_of_abstract_apa_format.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/persuasive_essay_topics_for_middle_school_students.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/lenovo_g50_80_old_bios.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/badume.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/what_episode_of_vampire_diaries_does_elena_and_damon_dance.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/58875132425.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/kitopaduzejukejeruzabeja.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21C 6588 bytes
SHA-256: 24fd6868f187b5667792517f9f69d22ac5a3de5011d4d3824467392effeade79
font_01_sfnt_off00010296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10296 5288 bytes
SHA-256: 7ead62e8009cf2db4013af6d76d4876e5a7f54407600bcd146b463b8260e496e
font_02_sfnt_off0001146e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146E 4420 bytes
SHA-256: 1111dded1898903458ef128442142b08083720aa26066c87e6a430f97634d74f
font_03_sfnt_off000123f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123F0 10988 bytes
SHA-256: ee82cd6119cfb42ba343e0b197110f7da1d09c24ff74b34a7bb9fd093ce3b1e3

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