Malicious PDF — malware analysis report

Static analysis result for SHA-256 40e8fa29e0fa159b…

MALICIOUS

PDF

83.3 KB Created: 2021-03-04 20:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: e97c065d9475535572a11c35a95c5992 SHA-1: 16d3e4b8913a6790f009bd76e369afd2acc49b45 SHA-256: 40e8fa29e0fa159b2d41b2c11fe9582a7a5bb1c1f2506a563e87c16eea06a6ef
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'crophysi.ru'. This URL is presented in the document body, suggesting a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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/award?keyword=pebble+watch+strap+replacement In PDF document text
    • http://lololoj.sportsontheweb.net/how_to_use_2_ton_trolley_jack.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471948/normal_5fefaa5fc5b35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484115/normal_5fe3866cceefa.pdfIn PDF document text
    • http://kewapejotok.22web.org/internal_angles_polygon_formula.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408170/normal_5feb505079101.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452376/normal_601410f7a3715.pdfIn PDF document text
    • http://nelitip.22web.org/26042569121.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/26478765511.pdfIn PDF document text
    • http://bezerojiw.scienceontheweb.net/how_to_use_lg_blu_ray_player_without_remote.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498983/normal_5fcd1f546b8b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465396/normal_5ff24c6ea2b80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500183/normal_604074e4aa414.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/is_the_texas_driving_test_hard.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/fujitsu_fi_7160_scanner_driver_for_mac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_60208b0022668.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457320/normal_600976f3a485e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_601e88b56e601.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/35704998475.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duvodix.myartsonline.com/81945759437.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/tiger_rice_cooker_10_cup_directions.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/smfm_guidelines_iugr.pdfIn PDF document text
    • http://sugizujesel.epizy.com/answer_for_heaven_wiki.pdfIn PDF document text
    • http://salajire.onlinewebshop.net/josuvekizaxonitamivi.pdfIn PDF document text
    • http://kobaxibijusufe.epizy.com/35508521957.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/ancient_rome_geography_challenge_answers.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10975 5408 bytes
SHA-256: c660069605cddd5cad5f3e0e6f729d0747e68af496a3d2113e8108a45e1275be
font_01_sfnt_off00011bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB9 10580 bytes
SHA-256: 030538aed1f7ac5907b12a9f33343ed6112936f52d59ff6c253d4292978045b4

Open this report in the interactive analyzer, or submit your own file for analysis.