Malicious PDF — malware analysis report

Static analysis result for SHA-256 7518acb88c75b6c8…

MALICIOUS

PDF

102.1 KB Created: 2021-04-24 20:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73527ab4017337f6eae1e9e53f9f04c2 SHA-1: a4790ac385bb7c46871529c3a392d5dd305c46b1 SHA-256: 7518acb88c75b6c8b8cb8a660cc685c72cf313775d11d5d9947b50acd4616706
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to a "tractor supply cannon safe review", suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/strik?utm_term=tractor+supply+cannon+safe+review
    • https://rutukosawokiw.weebly.com/uploads/1/3/4/3/134318214/162d0fa3dd.pdf
    • http://rekusigixebisuk.22web.org/affidavit_form_botswana.pdf
    • http://valigulepi.scienceontheweb.net/html_css_javascript_interview_questions_and_answers.pdf
    • http://malapiwo.66ghz.com/mapa_america_politico.pdf
    • https://static.s123-cdn-static.com/uploads/4370542/normal_5fed9609935f4.pdf
    • https://tafugamukizigip.weebly.com/uploads/1/3/0/7/130775106/2ad3b5a.pdf
    • https://static.s123-cdn-static.com/uploads/4487935/normal_5fff147e89e6d.pdf
    • http://jirenaxapibetig.scienceontheweb.net/blessed_assurance_elevation_worship_chords.pdf
    • https://kifosaxuwaf.weebly.com/uploads/1/3/4/0/134016965/2331202.pdf
    • https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/fawigu.pdf
    • http://lelekelosutov.getenjoyment.net/sefojoxi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://vagakidid.epizy.com/editing_a_file_in_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/a709f3cf-e39e-41e5-8b76-511dd4133028/how_to_play_cowboys_and_angels_on_piano.pdf
    • https://s3.amazonaws.com/tujeviwakirawu/pomubot.pdf
    • https://s3.amazonaws.com/rixevozajixezos/fubobuzejunoxa.pdf
    • https://uploads.strikinglycdn.com/files/0fc5ac55-c312-40a9-a9ee-afc8ac5a45d5/lincolns_reconstruction_plan_date.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_off000143a5.bin
5efe769bda7628806d6df0c3378c626ef7ea4afd7b7f2be7fcf3887ab5e8a882
pdf-font-stream PDF embedded font (sfnt) at offset 0x143A5 5092 bytes
font_01_sfnt_off0001551e.bin
57e566f067cbb704eaea03a79102f43f0a5554ac7d0658ec0fc421977b232a3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1551E 11896 bytes
font_02_sfnt_off00017d62.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x17D62 4324 bytes