Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3634acf258b8456…

MALICIOUS

PDF

84.3 KB Created: 2021-04-24 10:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 69d2f22695735216e5a0ff97f5f9eccc SHA-1: 22bf6467e8aafbc0b673717ca4dac8070c32f67c SHA-256: e3634acf258b8456650196d8e2ae1ae3c4e578826c436cf2ab46415ad2ced447
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF that was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'fokemale.ru', which is likely a malicious domain used to distribute a payload. The presence of a 'download button' heuristic further suggests a social engineering attempt to trick the user into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/strik?utm_term=axiom+pro+61+driver+mac PDF link annotation
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://juxumigine.mypressonline.com/74421388533.pdfIn PDF document text
    • http://bigpleasure.ru/can_iphone_read_out_text_messagesi2lv3.pdfIn PDF document text
    • http://wugupomovupa.sportsontheweb.net/hr_behavioral_interview_questions_and_answers.pdfIn PDF document text
    • http://axecheat6.xyz/2009_jetta_owners_manualuk31p.pdfIn PDF document text
    • http://smotrikino.fun/14363454478u8hqx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mukut/what_are_some_poetic_elements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dc715d8-2aa9-4588-a473-5ac94ef98ec2/kepetalelosijudavijawav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90be4f5b-07ff-471d-aa24-0bee82736f90/velegupevilafivaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eaa8ffe-bb88-43fc-9322-1abf201ddcea/tales_of_a_fourth_grade_nothing_chapter_7.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/free_e-_brochure_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/31751740581.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/88398478096.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/55631424332.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/electronics_mini_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/best_surgeon_for_cavernous_malformation.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/is_the_wii_u_outdated.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/crazy_zombie_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51c152f8-d368-4f3e-8dc1-ca8a6dfdb9f4/nufomebagikajafemaji.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/coreldraw_graphic_design_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/86288765106.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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAB 5332 bytes
SHA-256: ed3c09dc0d171cbd685db39583c9976e8a1c452bce25e32a750f4f9c72e4da10
font_01_sfnt_off0000fdbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBF 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0001064c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064C 11268 bytes
SHA-256: 73f0d82de9e99c43f16140737074a04100bab14828109dd8ece0cab7c713e27b
font_03_sfnt_off00012cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFD 16688 bytes
SHA-256: 3be891c27c013343e71b07035467fbc0b7b7a53cfdc126d54a6bc7e00c4c46cb

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