Malicious PDF — malware analysis report

Static analysis result for SHA-256 72076f382cdc8395…

MALICIOUS

PDF

75.9 KB Created: 2021-03-18 02:08:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 571609c43c665b79103925037008072f SHA-1: 2653a15dec5095c3f6fc078b9e7375bd2ecf79d8 SHA-256: 72076f382cdc8395c6191ecad02f6ab2bc3bece999de994a37957f3ea33c916c
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, with at least one pointing to a suspicious domain ('seumenha.ru') that is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to 'smart drive camera' settings, aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=how+to+turn+off+smart+drive+camera PDF link annotation
    • http://hiziryigit.online/691152865515v8hg.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwiketi/BhizUhh/91451504427.pdfIn PDF document text
    • https://cdn.sqhk.co/woledowo/m7EGVgQ/1282877507.pdfIn PDF document text
    • https://cdn.sqhk.co/rewagujil/igepigi/russian_masters_table_tennis_scores.pdfIn PDF document text
    • http://elinekici.online/expense_sheet_template_google_docs940j9.pdfIn PDF document text
    • https://cdn.sqhk.co/milagaleja/pjihaij/vosixesigifazikebibi.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/17344376794.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ae9ec5-c9e9-43c6-96fd-07f56dad830e/wonirefoxota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/531f541e-d672-4556-a0f8-54905c2dd08f/zujirekajalelogar.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/honeywell_thermostat_model_rth221b1039_manual.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/network_security_tools_o_reilly.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/agatha_christies_poirot_season_1_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/54365108049.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/79027129307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67276b54-fc97-4d26-a2e7-e25159e06aba/jolapisixexoxipuvele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89825972-ee72-46fb-88ea-3eeab35930e0/new_yorker_magazine_frame.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/24385741693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29a6307e-81df-4733-86cb-f2bd4e3ab83d/58986923601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d7e2a02-9f01-4520-908e-df28e81176c3/93599753875.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_off0000eac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC2 5248 bytes
SHA-256: abfab3d0d3b9ff0e8a045b05c33ae7ac45f97dfa2084bdab650deba85103f1e9
font_01_sfnt_off0000fc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC97 10996 bytes
SHA-256: 71143abb698c6bfa209dac38692235c083829752d3c8e781f9f5d2dc5263546d

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