Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66d2f88f918b2a8…

MALICIOUS

PDF

80.0 KB Created: 2021-04-04 00:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 949ab3dc3b452d83ce902046db5cc801 SHA-1: db2aa90c40a6529a824a83608c8a5330e8440398 SHA-256: e66d2f88f918b2a88ed7da53f3e3cb1797aa717b21133bb14512fe2eb669e18b
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, appears to be a lure related to a business plan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/strik?utm_term=biofloc+fish+farming+business+plan+in+india+pdf
    • https://cdn.sqhk.co/ruzixamover/gOUJWcI/33963334750.pdf
    • https://cdn.sqhk.co/torazanopuni/WhhEiit/munowetalaxisoziwudame.pdf
    • https://cdn.sqhk.co/lilaxikixo/ijibhdk/firinuforafuwibive.pdf
    • https://rozogefeju.weebly.com/uploads/1/3/1/3/131398259/takabetomerugunex.pdf
    • http://digtalcaliper09.xyz/what_is_integrated_learning_in_early_childhoodnl4w8.pdf
    • http://jewofuvivonog.getenjoyment.net/jezupofamotiguvotuworawel.pdf
    • https://wawodupalise.weebly.com/uploads/1/3/4/6/134621762/kunitu-vuwaxila.pdf
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdf
    • https://mefiwipof.weebly.com/uploads/1/3/4/3/134320940/tagugujixag-nepijeb-xebiwokovodo-zijowa.pdf
    • http://rumigiwataj.getenjoyment.net/xadusozotivan.pdf
    • https://degunosusoteri.weebly.com/uploads/1/3/1/4/131453230/3750373.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dazawojob/2001_dt466e_oil_capacity.pdf
    • http://xutenujute.myartsonline.com/40154792057.pdf
    • https://uploads.strikinglycdn.com/files/5cc0479f-c21a-4582-b530-8ba1147b2949/rock_n_roll_snowman_actions.pdf
    • https://uploads.strikinglycdn.com/files/9aa3ae38-f570-4f25-a67f-70e06bafb9d1/sebafesuduzilekexugu.pdf
    • https://uploads.strikinglycdn.com/files/47662c1e-c1b8-4a65-b49a-02b81ebab102/sajog.pdf
    • https://s3.amazonaws.com/baxegezivumi/hey_google_give_me_the_weather_report.pdf
    • https://uploads.strikinglycdn.com/files/71028b4b-7c07-4806-b13b-efbe856af68a/53542645094.pdf
    • https://s3.amazonaws.com/tutasujal/pool_chair_cad_block_free.pdf
    • http://buwifojozoziden.atwebpages.com/34698922091.pdf
    • https://uploads.strikinglycdn.com/files/78393eea-6a5c-48f2-a31b-aea4251c29e4/reading_comprehension_exercises_worksheets.pdf
    • https://s3.amazonaws.com/dudujopixejikug/shaggy_mr_boombastic_song.pdf
    • https://s3.amazonaws.com/sixenogafopoj/animals_worksheets_for_preschoolers.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_off0000f7d2.bin
dd3caaa925bc547400c0cc86b71b86c927dbcc36d9a671cc47e9abadd6670fbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D2 5760 bytes
font_01_sfnt_off00010b42.bin
50106a4056d2aac242113f8250b3f8ee1a6bfaad42359fcf4e91f1dcfec23286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B42 10948 bytes

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