Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c1b10275a267213…

MALICIOUS

PDF

66.8 KB Created: 2021-03-30 23:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 896b845425333d9ff61db57a6830a143 SHA-1: 5e5b66e9f8e048fb80dd48ba545995c599cc4c66 SHA-256: 1c1b10275a2672136ddae593782c4374d0217411a2a08aa70e3508f34e36a967
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to streaming content to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://vilenefex.ru/strik?utm_term=nancy+drew+saison+1+streaming PDF link annotation
    • https://bifuvabomefu.weebly.com/uploads/1/3/0/8/130814245/woduvedenaj.pdfIn PDF document text
    • http://jamosaxomexe.iblogger.org/98983923224.pdfIn PDF document text
    • https://sutafufig.weebly.com/uploads/1/3/4/4/134402916/wivuguniwof.pdfIn PDF document text
    • https://gazelavulokar.weebly.com/uploads/1/3/4/2/134265358/3f79dfe.pdfIn PDF document text
    • https://lopiranurepo.weebly.com/uploads/1/3/4/7/134735856/baa63e2e1d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ddd59a73-be73-4575-bd7b-2e5900175f8b.filesusr.com/ugd/5dc0ef_1a5fa6a2d3e441f78b953c581521019d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vavabi/66728931606.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/rifupofososorebemiv.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/who_are_the_main_characters_in_tempest.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/dupusorelajafesejazaberor.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/24727597841.pdfIn PDF document text
    • http://fimuwudefixolet.epizy.com/xefebafa.pdfIn PDF document text
    • https://d064ede3-316f-4d13-8ec5-014b2136b3bd.filesusr.com/ugd/154db6_a26ab758977944588e98f652c163f29c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/celestron_nexstar_130_slt_eyepiece_size.pdfIn PDF document text
    • https://63b1f34b-4847-450f-8d9a-4788d10e1cf5.filesusr.com/ugd/451a43_6a26508759aa4bc9834d52a272c29791.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/canaan_valley_ski_report_weather.pdfIn PDF document text
    • http://zarilapaserit.rf.gd/sniper_ultimate_kill_full_movie_download_in_hindi_filmyzilla.pdfIn PDF document text
    • https://b2bd4247-5771-4f9a-9f3f-b46500bff287.filesusr.com/ugd/f41bfe_280bda59e565420aa8dda151cc9f73c9.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_off0000c7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F9 5444 bytes
SHA-256: d88ac248b6f9b95a4aafa6627844f661d30e16e42d0b7d27c946d4db6763792a
font_01_sfnt_off0000da87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA87 10296 bytes
SHA-256: 2487a6708f636309c4c558436b7a28747f74df06ccf1071cf7a361cbb80c4d2b

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