Malicious PDF — malware analysis report

Static analysis result for SHA-256 deaf3a5fdf911d94…

MALICIOUS

PDF

69.4 KB Created: 2021-05-09 01:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: cbc8c5887dc1c64eae319ab0f6a303ee SHA-1: 45868a5bf300b06b21352c6663e671962814a0e4 SHA-256: deaf3a5fdf911d9454e648d31b22b3cf088aa2309360ecb44cafa4c208228c33
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with at least two pointing to suspicious domains ('soxebez.ru' and 'mefizilexofe.66ghz.com'), suggesting a phishing or malware distribution scheme. The presence of 'utm_term=ps+vita+charger' in one URL hints at a lure related to gaming consoles.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/strik?utm_term=ps+vita+charger PDF link annotation
    • http://mefizilexofe.66ghz.com/2574608691.pdfIn PDF document text
    • http://mon-cmso.best/86673930632zj96w.pdfIn PDF document text
    • http://skidki-day.site/division_using_the_big_7_strategyylyrd.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/hkRauNI/rofirimoxexikilegevopag.pdfIn PDF document text
    • http://small-italy.space/clasificacin_de_los_nmeros_reales_racionales_irracionales_naturales_y_enterosrd2em.pdfIn PDF document text
    • https://cdn.sqhk.co/jimavidozeze/lijjhSG/93616348645.pdfIn PDF document text
    • https://cdn.sqhk.co/makafabakuna/ViaStjd/bewakisazij.pdfIn PDF document text
    • http://bbcua.site/975835453115hxqb.pdfIn PDF document text
    • http://susadaxaxavotij.22web.org/gufobujew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ac734925-007a-49fa-9a6b-2340142042ec.filesusr.com/ugd/ea78e0_c8bf93bf61d74baab224ab0b1c8671bd.pdf?index=trueIn PDF document text
    • http://rupawuvafe.rf.gd/lazajexanepanufure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759f44fa-a283-4526-9930-1af26c87aea0/26620631681.pdfIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_2a8c9fcf88f94d4899fbb3f2adca9cb5.pdf?index=trueIn PDF document text
    • http://mopakutabeka.rf.gd/xozuxakegunifomawaserat.pdfIn PDF document text
    • http://bukaduxanob.epizy.com/60538798670.pdfIn PDF document text
    • https://b6c9d0de-81a1-4db9-ab7d-8a95af9e63d6.filesusr.com/ugd/b28ae2_5399a39c12b948c89364a0a67a325476.pdf?index=trueIn PDF document text
    • http://sovagawaz.rf.gd/3023803370.pdfIn PDF document text
    • https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_0bc0b5076f4a4e14a497dca6c1ae3aa5.pdf?index=trueIn PDF document text
    • https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_99bdc8a8423049869459122bfa6a42c3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe910e0-69a3-4c58-8be8-c707f537b08b/samsung_ipolis_camera_manual.pdfIn PDF document text
    • http://sewoxoxitif.rf.gd/babesivasigopoto.pdfIn PDF document text
    • http://gakuxalodakedaj.epizy.com/95919300488.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d618210-9d68-452c-a2fa-f5a084782669/ar-15_pistol_muzzle_velocity.pdfIn PDF document text
    • http://nexuxawire.epizy.com/how_to_use_record_player_adapter.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_off0000d23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23B 5088 bytes
SHA-256: d115bca10cd10044679bbfd32a1aeb5ff5d5730677b7a3989fa48edbc70d8a9d
font_01_sfnt_off0000e390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE390 10896 bytes
SHA-256: 0d10cf07f2076219eafdc9a37e6ee0407117657946d8f3d3613a1f6b6aafcf9a

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