Malicious PDF — malware analysis report

Static analysis result for SHA-256 63811d728437c68c…

MALICIOUS

PDF

84.1 KB Created: 2021-05-10 15:23:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4d3ab9c5dcd2dcfb7f88b3e2f2f4b053 SHA-1: a95a7172a3bd4bf2a3f8d18a0eaecec75cc1dcaa SHA-256: 63811d728437c68c9e3bf8c8d2828292c6a45350b543b18d97077f1f7dc8938b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified as a potential phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/strik?utm_term=remington+700+tactical+308+fluted+barrel PDF link annotation
    • https://watibovogop.weebly.com/uploads/1/3/4/8/134876481/silekotez.pdfIn PDF document text
    • http://sberin.xyz/2672442010667uqa.pdfIn PDF document text
    • http://mandarins.space/bosch_aquatak_110_plus_service_manualkyct8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380523/normal_5fe3447b2c07e.pdfIn PDF document text
    • http://vazewuxu.mywebcommunity.org/3236351043.pdfIn PDF document text
    • https://dupivujo.weebly.com/uploads/1/3/4/6/134612497/xoredamumi.pdfIn PDF document text
    • https://vawegoti.weebly.com/uploads/1/3/0/8/130874218/a705a18423.pdfIn PDF document text
    • http://boevoenlp.com/doseluzaxujimixirekavo4ixm8.pdfIn PDF document text
    • http://haustova.com/simadenakavefak4ut5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443804/normal_60601b3ae3868.pdfIn PDF document text
    • https://manabuvajej.weebly.com/uploads/1/3/4/8/134847277/gebovufubewadepu.pdfIn PDF document text
    • http://ndfnasg.xyz/jamajukrmsuq.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/bupaxomu/dark_wallpaper_4k_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/odia_album_dhoka_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e9a9f67-369b-4f7e-9aab-2865dd64fe1f/diary_of_a_wimpy_kid_movie_full_movie_online.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/excuse_me_in_chinese_formal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53b69cd-b3e6-4219-bb08-0c3e696fc877/generac_3100_psi_pressure_washer_parts_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee4f15de-d5a7-42c9-ae80-b7d4c0fc1fe2/gatijifegavove.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/chosen_but_free_geisler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d66abbf2-fa92-4e7e-bd8d-9e191e0c16e0/mods_farming_simulator_2015_xbox_360_download.pdfIn PDF document text
    • http://xekabotiwuker.atwebpages.com/sistem_bilangan_real_kalkulus.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_off0001040f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1040F 5888 bytes
SHA-256: ab44f56662b5531cd9ada2145112c8cc15f69c27226d44d50144951abd58837e
font_01_sfnt_off00011814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11814 11940 bytes
SHA-256: 708abc8a420d8d4ae8bdef6a94571360ad7414a9b9c7cb2527b83c878662f3c6

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