Malicious PDF — malware analysis report

Static analysis result for SHA-256 7956c56e48f7eac6…

MALICIOUS

PDF

78.4 KB Created: 2021-02-24 04:12:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2d33289224b837c639f76e255b6460e9 SHA-1: 5ef63d4c1d65ca5fd3b121be0a8ee97ed1731711 SHA-256: 7956c56e48f7eac671de703b2c5e5c333e70814f1f16c6e8fb4c7d17e215b652
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many of which point to PDF files hosted on various domains, suggesting a link farm or SEO spam operation. The document body, though heavily obfuscated, contains keywords related to refrigerator repair and troubleshooting, likely serving as a lure to attract users to the malicious URLs.

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://maypoin.ru/aws?utm_term=frigidaire+refrigerator+repair+troubleshooting PDF link annotation
    • https://zexawowa.weebly.com/uploads/1/3/6/0/136081798/9463721.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/zojura_vodofu_tezomo.pdfIn PDF document text
    • https://kulojimafad.weebly.com/uploads/1/3/4/5/134518235/vabiwubaludis.pdfIn PDF document text
    • https://nuzojumikosa.weebly.com/uploads/1/3/0/8/130814298/7efe0a45c67a1.pdfIn PDF document text
    • https://cdn.sqhk.co/firataxoworo/hjahhia/54578452917.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/bhcSeig/foferolevepab.pdfIn PDF document text
    • https://dijibuxanizaxi.weebly.com/uploads/1/3/4/8/134859775/nufixavopesife_kitumumujer.pdfIn PDF document text
    • https://xawavefite.weebly.com/uploads/1/3/4/6/134667803/zimowiwowelatez_xupojufimiju.pdfIn PDF document text
    • https://dobisuji.weebly.com/uploads/1/3/1/4/131454523/2d7a9aa412b8be.pdfIn PDF document text
    • https://gobodukigibab.weebly.com/uploads/1/3/1/8/131856162/lupabemetareruwa.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/jiv4GLE/download_the_seven_deadly_sins_grand_cross_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411944/normal_6009a5988afbe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/how_to_speak_british_english_accent.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/calma_remix_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/64405244221.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/zavaletodawavixelum.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e78a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78A 5280 bytes
SHA-256: fb08de96cb3165b5c49dc455e853716a47d15381d0503acb7c2178594da5ac8b
font_01_sfnt_off0000f967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF967 10724 bytes
SHA-256: febffd2343548b2696111de28eaf53be3fa3773ae01d9e46df36fc77cb85fd68
font_02_sfnt_off00011e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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