Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b449350393de66a…

MALICIOUS

PDF

72.5 KB Created: 2021-06-09 05:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9770b647d9fd2275f2a570b240abbbbf SHA-1: 0e013d9b6994ad3cfe0939c477cdeac49ca37d34 SHA-256: 9b449350393de66a6086ea6664aba814bb3cfd4c79cfbb393f783b25ffe3a40b
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, a technique often used in phishing or to distribute further malware. The embedded URLs suggest an attempt to redirect users to malicious sites, potentially for credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://philabc.ru/pbw?utm_term=neet+pg+2020+question+paper+with+solutions+pdf
    • https://cdn-cms.f-static.net/uploads/4485704/normal_603195d73dc3c.pdf
    • https://duzofonateras.weebly.com/uploads/1/3/4/4/134494902/7720585.pdf
    • https://suwagapijewes.weebly.com/uploads/1/3/2/6/132682436/11627e4efaf.pdf
    • https://vurerabekude.weebly.com/uploads/1/3/4/4/134493837/nijizob.pdf
    • https://bikujezojodu.weebly.com/uploads/1/3/4/5/134587809/zimaroduvisiwobuwep.pdf
    • https://suxewanevot.weebly.com/uploads/1/3/4/5/134595646/lemaligazuxojax-vodamipa.pdf
    • https://cdn-cms.f-static.net/uploads/4421627/normal_603e8d5d4287e.pdf
    • https://fukobararusi.weebly.com/uploads/1/3/4/4/134404541/zivufejuzode.pdf
    • https://jeporifitev.weebly.com/uploads/1/3/4/2/134265357/mujazej.pdf
    • https://static.s123-cdn-static.com/uploads/4419003/normal_5fcff36ed7553.pdf
    • https://saxavotu.weebly.com/uploads/1/3/5/3/135306365/xigag_zolakijuguzalew_kofuxasajumale.pdf
    • https://dawugagulinejud.weebly.com/uploads/1/3/4/3/134368664/8302619.pdf
    • https://xirunokud.weebly.com/uploads/1/3/4/4/134467368/3792146.pdf
    • https://detubutil.weebly.com/uploads/1/3/5/3/135348338/bediru-wimijupigi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/892b289f-709c-4f70-a27a-662ba0993a96/ramante_edanthottam_full_movie_free_download_400mb.pdf
    • https://uploads.strikinglycdn.com/files/c771c815-e2c7-4656-ba43-415401a4dc04/rifoxel.pdf
    • https://uploads.strikinglycdn.com/files/a9602c2e-5ae3-4540-a4ea-d735ada39948/maytag_bravos_xl_washer_lid_lock_bypass.pdf
    • https://uploads.strikinglycdn.com/files/63c6b5c8-278d-4064-83df-30bfc6f9b698/34847052853.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_off0000dcbd.bin
c249c939a86e1879f76ece5043a6c1550b5184853502469c238eedf9528a579b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBD 5764 bytes
font_01_sfnt_off0000f06f.bin
de89bd4ad3dc3258b546d77c0d5e0d7f3c5457612d1c6ad4faeb0ec3e3c5005f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF06F 10648 bytes

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