Malicious PDF — malware analysis report

Static analysis result for SHA-256 3358d3022df73f3f…

MALICIOUS

PDF

79.5 KB Created: 2020-12-27 04:16:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5482f83f915bd586f33e860292b03522 SHA-1: 94e8a1bc9d983df90621e799099ff1b676a846c2 SHA-256: 3358d3022df73f3f194dc31a347a38de13b6f24ad3d8b003e1c252ed01f30f15
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains text related to 'Rocket car ball hack mod download', suggesting a lure for users seeking game modifications. The ML classifier and ClamAV detection further support the malicious nature of this PDF, likely used as a phishing attachment to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=rocket+car+ball+hack+mod+download In PDF document text
    • https://cdn.sqhk.co/jibenapola/RCQLRDL/sagavefamusubovukojoz.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/ca690c4f7f4d210.pdfIn PDF document text
    • https://cdn.sqhk.co/sepufaziru/YIibxhe/goxuwaliweraxinagux.pdfIn PDF document text
    • https://wasafigazepez.weebly.com/uploads/1/3/4/5/134586721/gufetinut.pdfIn PDF document text
    • https://vidigesiwixir.weebly.com/uploads/1/3/3/9/133997627/a98da1a885d5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425255/normal_5f9e8ed43c796.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/f51170f3-8851-4cf7-b525-39744ec32423/44540149644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c7746b8-eb27-4896-8d25-5bad1736556e/zabozizilivonogigigubujep.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/dixasiwigikumalutavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e80337cc-fbed-4744-8ca8-895fb64cc7da/80911677989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0fc85ea-a195-47fb-b25d-085401ed5667/bidevizazesufumunukas.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/manual_da_moto_cbx_200_strada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1064057-b5c1-4f60-80f2-be5c34ccc6c9/toy_steam_engines_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38fc7a59-c735-40ac-882f-b6fb8118ff95/53842076608.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000108fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x108FB 22020 bytes
SHA-256: c1a99d6ca2826f4c0548f6ed623f7a16fe4d42ddc5d8efdb059538cdf8f7ddef
font_00_sfnt_off0000d0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FB 5304 bytes
SHA-256: 9eb74160bba8ded622884549a68d9ea5b3df03dc287d195b37bcdcec9d8f0f58
font_01_sfnt_off0000e2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EF 11520 bytes
SHA-256: e441e19ecf113bb177b762dba037c05393764a0c74b05255bd66a85cf801e563

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