Malicious PDF — malware analysis report

Static analysis result for SHA-256 34afed08d8d98bc3…

MALICIOUS

PDF

87.5 KB Created: 2021-04-01 01:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8b60da6c2eeebcb9513c1a5934854f11 SHA-1: 2f8fac845bdf8757a9fbae7e5391d7e6529302e9 SHA-256: 34afed08d8d98bc3066da981bc08e73f03c36e3aabe28fdcdc396081bd841485
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a link farm, directing users to a suspicious URL (https://soxebez.ru/award?keyword=wordly+wise+3000+book+6+lesson+13+pdf). ClamAV also detected it as Pdf.Phishing.Trojan. The presence of embedded URLs and the nature of the link farm suggest an attempt to direct users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://soxebez.ru/award?keyword=wordly+wise+3000+book+6+lesson+13+pdf PDF link annotation
    • https://kilosite.weebly.com/uploads/1/3/0/7/130739696/3975070.pdfIn PDF document text
    • http://ramuwazezu.22web.org/google_sheets_templates_to_do_list.pdfIn PDF document text
    • https://sajosapisede.weebly.com/uploads/1/3/4/3/134344890/tilarimo.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/7240e8a9-9144-4392-87b4-6a36cfa782d3/58924770060.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/55691874856.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/confidence_power_plus_treadmill_run_machine_pink.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7e11f9a-1624-4423-aca5-891d3f0fce0b/contabilidad_de_costos_libro_juan_garcia_colin.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/fogunepawiwiso.pdfIn PDF document text
    • https://cb0508fd-2a1f-4901-a161-a76823ee8e4f.filesusr.com/ugd/52013e_3d23f32e7c2441d69e0709046823f3dd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/do_you_have_to_calibrate_omron_blood_pressure_monitors.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/the_brothers_menaechmus_er_watling.pdfIn PDF document text
    • https://12350a4d-732a-4148-85a7-4fa27f2a77ec.filesusr.com/ugd/17beed_4e3d8a836b1d4676a14108fc1497c9e8.pdf?index=trueIn PDF document text
    • http://vewomani.rf.gd/formal_ways_to_address_in_spanish.pdfIn PDF document text
    • https://05f6fcc2-a4c7-4d5b-b58c-97b640a93f4d.filesusr.com/ugd/74147a_3f4244f029044bc5ad6699503869ebe5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad78acac-5c4b-4245-a275-417bd77e6f1d/tarot_for_dummies_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19134850-29f6-49ea-8826-a0d4d48e9be5/how_to_buy_merchandise_for_a_retail_store.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/47361454030.pdfIn PDF document text
    • https://d99c26cc-8c68-456d-a039-1a26994c8d26.filesusr.com/ugd/105a8c_baaa50d659b44aec8db70074fcadb790.pdf?index=trueIn PDF document text
    • http://rojaxenutu.rf.gd/subway_singapore_menu_price_2020.pdfIn PDF document text
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_d7324a8a57da45659a964a54aad350d0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mosezavor/vizufijovunukavapiz.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_off0001159b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1159B 5748 bytes
SHA-256: 61b92fbca7922aa86e999ad2ab9ea6d6412eeb991cbbaf909cc2a9faf45521f9
font_01_sfnt_off0001295a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1295A 11676 bytes
SHA-256: 5d820d95d43f075c49b9ef9a7bfe432009b15a2af47d832b315fe050aeec60c8

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