Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6ee6020448d546…

MALICIOUS

PDF

99.5 KB Created: 2021-05-29 07:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecebfcb059bcf1418d404112e6c2cb2c SHA-1: 7291d0376cc03bc1cf9f14044c9c2bbc00a187a0 SHA-256: 0a6ee6020448d546a2cc6502a751699986354ee397ceaa5722c3d105839060e3
196 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous external links, with one pointing to `https://crophysi.ru/123?utm_term=arduino+bluetooth+led+controller+with+android`, suggesting a lure to a malicious site. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates the document's content likely attempts to trick the user into installing or connecting to remote support tools, a common tactic for social engineering attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://crophysi.ru/123?utm_term=arduino+bluetooth+led+controller+with+android
    • https://roletevuroza.weebly.com/uploads/1/3/4/3/134314330/c50549c186.pdf
    • https://wosabizovores.weebly.com/uploads/1/3/4/5/134577485/dajewofed.pdf
    • https://rixotojar.weebly.com/uploads/1/3/0/9/130969533/wogiforaxas.pdf
    • https://cdn-cms.f-static.net/uploads/4501229/normal_601aabf32e5eb.pdf
    • https://luwidejike.weebly.com/uploads/1/3/4/8/134881341/8635198.pdf
    • https://koledino.weebly.com/uploads/1/3/4/3/134332835/kalabawuxox.pdf
    • https://kefawefixak.weebly.com/uploads/1/3/0/7/130738991/xidofemazalab-kasozabusumoxi-widebupufavem-buruw.pdf
    • https://static.s123-cdn-static.com/uploads/4374368/normal_5fef97d24c85c.pdf
    • https://jenodaxadow.weebly.com/uploads/1/3/4/0/134012655/tusize_tugobazuwuwo.pdf
    • https://ligizedafovawu.weebly.com/uploads/1/3/2/6/132680967/7312791.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9972fbb8-6bb1-4763-a600-02f2fb4f36f9/how_to_describe_respiratory_sounds.pdf
    • https://uploads.strikinglycdn.com/files/1504a47e-9763-4638-a480-ce8d3a0d124c/72840394265.pdf
    • https://uploads.strikinglycdn.com/files/b46d460d-8391-437e-b598-7ca295dcfc17/data_mining_text_book.pdf
    • https://uploads.strikinglycdn.com/files/e944f635-14d5-4d69-8db8-e33fb5b4461f/what_we_talk_about_when_we_talk_about_love_analysis_essay.pdf
    • https://uploads.strikinglycdn.com/files/f4ca48de-24ec-425c-9d51-8183de920ff3/how_to_find_an_autopsy_report_online.pdf
    • https://uploads.strikinglycdn.com/files/35153e76-03a6-4b98-8a4e-50f1be2a079f/yvain_the_knight_of_the_lion_burton_raffel.pdf
    • https://uploads.strikinglycdn.com/files/4e256271-219b-40ef-8fe2-5b40da94af0f/15227250749.pdf
    • https://uploads.strikinglycdn.com/files/1d1ef774-6d13-43c0-b1f9-d38f0657c498/rii_mini_x1_keyboard.pdf
    • https://uploads.strikinglycdn.com/files/2be45917-d347-4272-a5ee-41911bad6c79/can_you_get_big_with_kettlebells_reddit.pdf
    • https://uploads.strikinglycdn.com/files/0e292953-d271-4d27-9253-5854f6d7f29f/8631976586.pdf
    • https://uploads.strikinglycdn.com/files/22c3edf7-7686-4b4d-9039-c3cdaf3c01dd/solidworks_electrical_training_manual.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_off00014983.bin
12b7b0cb3547a6c2ede941c78bc848bbc1bb02bf92930bde9192e0e8a130bc14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14983 5072 bytes
font_01_sfnt_off00015acb.bin
e9c7ebcf21bc87a918cf023eab50aa663799b98dd9ce204993ccd76b0669c40e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15ACB 11296 bytes

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