Malicious PDF — malware analysis report

Static analysis result for SHA-256 8843ebfbb8967b86…

MALICIOUS

PDF

71.5 KB Created: 2021-03-06 01:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 7b80c3708265c359b846e46b0fc93948 SHA-1: 51b422874c08b2cd292d5a13f36d1b8746885730 SHA-256: 8843ebfbb8967b86aa167f8ee266b2683fb67c5844779ff5597f6ad7797cc64a
126 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a notable external URI pointing to 'fokemale.ru', suggesting a redirection to a malicious site. The PDF's structure and the presence of multiple links on disposable hosting further support its use as a lure for malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/123?utm_term=sharp+carousel+1.8-cu+ft+1100w+countertop+microwave+%2528stainless+steel%2529 PDF link annotation
    • http://mowefopovog.mywebcommunity.org/free_cad_viewer_for_windows.pdfIn PDF document text
    • http://kavelizopepi.mywebcommunity.org/brown_wiener_dog_names.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/renoxelewotewobiwetovod.pdfIn PDF document text
    • http://winatesef.sportsontheweb.net/how_long_does_redmi_note_4_battery_last.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408330/normal_603f69b6b2bf1.pdfIn PDF document text
    • http://fazurusitu.getenjoyment.net/jopiro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478414/normal_602d3a33cf522.pdfIn PDF document text
    • http://wosurijegu.22web.org/punikajojegolevumed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453721/normal_60254fdfdba87.pdfIn PDF document text
    • http://tojuvapemupo.mywebcommunity.org/crate_powerblock_amp.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/91316ee0-765e-41fa-b555-36a59ee37ae1/what_is_quality_operations_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ff43ecb-2790-42fa-855a-72097bbc3741/garmin_oregon_600_manual.pdfIn PDF document text
    • http://zagenududabeg.rf.gd/viking_hot_tubs_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58b23d14-2b1e-4231-848c-a62111ec49d1/patafanimokabado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81339556-ff5d-4a83-af3f-888f81cfb326/toturakebivibod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f5deeb-75cf-46d8-a7a1-6c363890f2c9/mosquito_magnet_patriot_plus_light_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68c30114-dc33-40de-bad8-055d06313576/ruzebaxegadipogupimen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/428db095-9870-4b05-8fd7-909c7c091cf2/dawilifobenewilawubij.pdfIn PDF document text
    • http://miganuvag.myartsonline.com/wiat_iii_score_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/708c61c3-ea6c-4a48-96e4-36e288e9058c/lofotabatutilazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f2493a4-0992-405e-aa91-e7d57ac2daae/12492778759.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_off0000d6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DC 6116 bytes
SHA-256: 05ca284151d3ef0fe6792b9eef0623b438d3b608f79375b623b79df2ac6afef2
font_01_sfnt_off0000ebba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBA 10676 bytes
SHA-256: b9f3edf84761fd761d1e40318dde1662af708d03f7180e6acd7fe279a15b9d1c

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