Malicious PDF — malware analysis report

Static analysis result for SHA-256 84674c77ece6333d…

MALICIOUS

PDF

72.7 KB Created: 2021-04-01 05:52:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb7a1732ddf43f8a8d23cffc0b70e04f SHA-1: 7826579d0e867c37eff3427013ce38706de6dda0 SHA-256: 84674c77ece6333d573c2ac8ee8b3d5823905d1b2d85c5a2e7d4435b4daf65af
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 high likelihood of malicious intent. It contains embedded URLs that point to suspicious domains, suggesting a phishing or malware distribution scheme. The document body, though partially corrupted, contains text related to 'Bootstrap form wizard submit', which is likely a lure to disguise the malicious nature of the PDF. No scripts were extracted, but the presence of external URIs strongly suggests the PDF is designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://vilenefex.ru/123?utm_term=bootstrap+form+wizard+submit
    • http://formverifiedbadge.com/14809010785kkplw.pdf
    • http://reduslim-shopofficial.site/free_hotel_california_original_song3kpjq.pdf
    • http://verifiedbadges-form.com/sojipeqbcxg.pdf
    • http://raliwoze.iblogger.org/probability_equations_ap_stats.pdf
    • http://www19216801.site/484143535208pau2.pdf
    • http://tumbochka.space/wiwedikeximaxu46g57.pdf
    • http://afracheat9.xyz/51789916593adb5p.pdf
    • http://216tilford.com/zumoliwibefete8vcor.pdf
    • http://ligorowimilupux.22web.org/trek_cycleops_mag_trainer_parts.pdf
    • http://wordsidepost.top/5718123283u4hrp.pdf
    • http://obuv-kozha.ru/i_jedi_amazon1tu6w.pdf
    • http://ipoteka.net/rash_on_my_childs_cheeksat3rq.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/geradi/zewumoban.pdf
    • https://s3.amazonaws.com/dazuxujepov/nurseslabs_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/4b6023da-ef4c-47a6-a093-a69ec2a2b923/define_economy_baby_boomers.pdf
    • https://s3.amazonaws.com/zasepo/conflict_management_techniques_examples.pdf
    • https://uploads.strikinglycdn.com/files/9ce94809-3d5e-4e3b-966a-e4037159b035/how_to_do_a_sources_cited_page.pdf
    • http://dimesagir.epizy.com/beiimaan_love_full_movie_filmywap_hd.pdf
    • http://rezujadutifinom.rf.gd/fazer_assinatura_digital.pdf
    • https://s3.amazonaws.com/jivuxo/daunting_formidable_crossword_clue.pdf
    • https://s3.amazonaws.com/nonipesikiri/tefodidiketaged.pdf
    • http://sevetise.rf.gd/chlamydial_infection.pdf
    • https://uploads.strikinglycdn.com/files/21d8d62d-f750-4cf0-b461-0d85be337e1e/fifty_shades_freed_filming_locations.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_off0000dab6.bin
03e68427bab3f3b44527d8ad998646cb14cd061372a81c187cb9c6e68c66a9ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB6 5488 bytes
font_01_sfnt_off0000ed64.bin
12f38d4345c0a5836f831db834ecd881a69cdc307b0f5188b04b139fab1ba770		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED64 11680 bytes

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