Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab650eaf18e636d3…

MALICIOUS

PDF

79.4 KB Created: 2021-03-10 12:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d849ccee3e84548f0273c626a5056535 SHA-1: b9ab27802db1c8812b7345ba620c0a2a24a65082 SHA-256: ab650eaf18e636d35b2705bdaa038abeaf5c835b8a5b0c20a1542e332bbb1dd5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity, likely aiming to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://baarspo.ru/strik?utm_term=walmart+pharmacy+open+memorial+day PDF link annotation
    • https://cdn.sqhk.co/tinajugezepi/hfE23sm/59823482695.pdfIn PDF document text
    • http://sasezifunapa.iblogger.org/gikurigijivi.pdfIn PDF document text
    • https://bewosugug.weebly.com/uploads/1/3/0/8/130814774/896a98112.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/61937782972.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/jbV7zJ2/dune_bashing_dubai_cost.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/trig_identity_integral_calculator.pdfIn PDF document text
    • https://vizedaxitexoter.weebly.com/uploads/1/3/4/7/134740617/sazogenurodo.pdfIn PDF document text
    • https://gukevejulolun.weebly.com/uploads/1/3/2/3/132302942/276edb.pdfIn PDF document text
    • http://vivubowi.getenjoyment.net/bihar_board_10th_admit_card_2020_download.pdfIn PDF document text
    • http://tadurarawi.mypressonline.com/73462242986.pdfIn PDF document text
    • https://sifajovu.weebly.com/uploads/1/3/4/8/134874608/2856563.pdfIn PDF document text
    • https://guxumexowe.weebly.com/uploads/1/3/3/9/133999944/faxamomirazob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gafalifavulix.epizy.com/12238710192.pdfIn PDF document text
    • http://zotubune.myartsonline.com/gulifetopagajutemun.pdfIn PDF document text
    • http://sazasewugekupej.onlinewebshop.net/what_is_software_program_management.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/demoritovesulomu.pdfIn PDF document text
    • http://zugepoguj.onlinewebshop.net/are_healthy_choice_bowls_gluten_free.pdfIn PDF document text
    • http://naburonip.myartsonline.com/tawaxeniduw.pdfIn PDF document text
    • http://vawirir.atwebpages.com/body_for_life_workout_plan_spreadsheet.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/45213530649.pdfIn PDF document text
    • http://jemileti.atwebpages.com/70895804429.pdfIn PDF document text
    • http://zolefajomiwa.rf.gd/60055606687.pdfIn PDF document text
    • http://xotopunutogor.rf.gd/15473017760.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE837 5036 bytes
SHA-256: 1070cd1e88d094ae2d5690f6378f5b72d2c743bfecd6ae450c5d759c29631986
font_01_sfnt_off0000f930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF930 11704 bytes
SHA-256: e4bc82c2499c9b3c665bb5a51ff9612bd78011f09f1336977addb464acda7d75
font_02_sfnt_off0001205d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1205D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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