Malicious PDF — malware analysis report

Static analysis result for SHA-256 56252cd1b3cd4486…

MALICIOUS

PDF

71.5 KB Created: 2021-05-08 01:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 65924007a00ea52468ad925e660066e6 SHA-1: 0ec13f5219df2a8bf0f582100d761da8da115c96 SHA-256: 56252cd1b3cd44861af95b3c2df18922eb196fbe6bec0990b809e15096014125
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs pointing to suspicious domains, specifically 'xajibur.ru' and 'zezomaxijuduj.22web.org', which are likely used for phishing or to host further malicious content. The document body, though heavily obfuscated, contains text related to music downloads, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/strik?utm_term=descargar+musica+de+antony+santo+mix PDF link annotation
    • http://zezomaxijuduj.22web.org/mesifadavaz.pdfIn PDF document text
    • https://cdn.sqhk.co/doxanusubomo/4ggjdhi/htc_live_weather_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/jbSbjex/splash_lagoon_nearby_hotels.pdfIn PDF document text
    • https://cdn.sqhk.co/wojinagimepu/jjdjidc/23853511878.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/2w8ihib/80693985896.pdfIn PDF document text
    • http://sunuzajiwexo.22web.org/pitazi.pdfIn PDF document text
    • https://cdn.sqhk.co/jalosemuv/TjiaZWL/maralojezedibixexefuzok.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/gcgcif4/dixafopunejatu.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/WhjVHfA/sawegewunajiwuwo.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/widCAhf/vubisoradefivivititobu.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxaguzifep/eWOhc8g/12690516536.pdfIn PDF document text
    • https://cdn.sqhk.co/boguzivipel/Ghcjdje/45856510225.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/a799b28c-1eab-46c8-b00e-ad04727a3b6d/letra_cancion_catolica_saber_que_vendras.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/sasuwitedagodafotadex.pdfIn PDF document text
    • http://xafupuzekiv.rf.gd/ferapo.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/what_does_down_a_rabbit_hole_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dfdc0a3-7009-460c-96c0-bf8913b9e659/soundcraft_ui16_software_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/luxavuzuxibokedub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfd2024b-95ee-4f02-ac5c-bfedc8ccd2e8/jalodeferujaponera.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/food_combining_chart_for_acid_reflux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e57634d7-2682-4e09-b2df-eabc33939f84/1576991137.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9334975f-37ae-4723-a9a7-bae29c1f2a64/34987090804.pdfIn PDF document text
    • http://jixopararaz.rf.gd/74448068495.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/nixubikut.pdfIn PDF document text
    • http://nenoruwuniru.rf.gd/64985076338.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_off0000d957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD957 5396 bytes
SHA-256: ab96c098923b4a1a71d2971510707c962b91c442308723ff31b608f7fbdc10da
font_01_sfnt_off0000ebac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAC 11232 bytes
SHA-256: 3f466dc693c1f5ed97446c8d7882478a3d00979cef85ab6bb100b3c45b211495

Open this report in the interactive analyzer, or submit your own file for analysis.