Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f017ac295ef6514…

MALICIOUS

PDF

75.4 KB Created: 2021-03-15 20:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 216df458a9ebe84e45ede3cec8c72b23 SHA-1: d0413da846f9d2d31dd58e241ee1db2d6f2be6f6 SHA-256: 9f017ac295ef65143909cfdbf52b3cdde890f56044ffebce990a51142bef4f3b
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO poisoning tactic. One prominent URL, 'https://soxebez.ru/wix?keyword=approved+science+keto+near+me', is likely used to direct users to malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://soxebez.ru/wix?keyword=approved+science+keto+near+me PDF link annotation
    • http://feremujidonigu.getenjoyment.net/arnold_schwarzenegger_bodybuilding_quotes.pdfIn PDF document text
    • https://tigelulipuneve.weebly.com/uploads/1/3/4/7/134746657/1da77dd4f97e0.pdfIn PDF document text
    • https://lifoluzasodani.weebly.com/uploads/1/3/1/4/131437418/9dfdf898d1.pdfIn PDF document text
    • https://pipomojum.weebly.com/uploads/1/3/4/4/134437532/nenusaxu_wukudujotoji_wejaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/rumulokazifewez.pdfIn PDF document text
    • https://981168d4-05fc-44b6-871d-73371d7e8cf1.filesusr.com/ugd/87d215_22aab91f8c2b42f9b9767103bc99d12d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jotizifime/memujepulixoxosixodomon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e750f109-29b2-4b21-b8ee-bbbcc676fa65/what_is_the_formula_for_surface_area_of_a_cone.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/how_to_download_adobe_premiere_pro_cc_2020_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5975215e-c173-4334-a031-185c6d1a6da1/how_to_set_time_on_timex_marathon_wr50m.pdfIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_bcd2926d96ee405fbd6da5a7585a207d.pdf?index=trueIn PDF document text
    • https://05f6fcc2-a4c7-4d5b-b58c-97b640a93f4d.filesusr.com/ugd/74147a_544d722680fe4203b9cb72704c00f0c3.pdf?index=trueIn PDF document text
    • http://tebuwawezizafes.onlinewebshop.net/mass_production_of_metarhizium_anisopliae.pdfIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_4a5cbdce114141588f2fe34734faca6a.pdf?index=trueIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_ff8a3214ffb4494990b4c8f41c39094c.pdf?index=trueIn PDF document text
    • http://kepofif.onlinewebshop.net/dell_optiplex_780_sff_windows_10.pdfIn PDF document text
    • https://d787a32c-196b-4e99-9c98-3ae3c28023f9.filesusr.com/ugd/05b469_3faec42e8f7a480bb789f2a9b015814e.pdf?index=trueIn 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_off0000e99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99D 5300 bytes
SHA-256: fec3ad42da086d09a271edc2ae67232662ad3e5aee62724d299da09b74356e6c
font_01_sfnt_off0000fb99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB99 10872 bytes
SHA-256: 5bd4d3535926c6d89d05b25dc640783dde2d17ded8e40f1dce00c9cb1283535d