Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e28ed9af263cff9…

MALICIOUS

PDF

90.5 KB Created: 2021-03-18 12:04:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42f2d80723f98948fd1fd664d377e3ab SHA-1: 74685c07a1bc76c4f92e4b08ccda5b477dac6c92 SHA-256: 6e28ed9af263cff966460dbe5d1a59a93d502af5745d6452d09fedfba812c5d1
156 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 phishing or trojan threat. It contains a significant number of external links, a common tactic for link farms or redirecting users to malicious content. The document body, though heavily obfuscated, suggests a lure related to 'boy scout flag ceremony pdf'. No scripts were extracted, but the presence of numerous external links points towards a phishing or content-driven malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://maypoin.ru/wix?keyword=boy+scout+flag+ceremony+pdf
    • https://wizenifove.weebly.com/uploads/1/3/4/3/134308138/49a522ad.pdf
    • http://makeyourself.xyz/sewufewebugijoxiwusirpx9zu.pdf
    • http://japancar-sib.ru/3302193438383skr.pdf
    • https://cdn.sqhk.co/zebapomiz/7viiiie/home_design_3d_freemium_apk.pdf
    • https://fopozawiluni.weebly.com/uploads/1/3/4/3/134383369/885bf678e4765.pdf
    • https://jubamojeke.weebly.com/uploads/1/3/4/4/134432472/b914d00d3a.pdf
    • https://cdn.sqhk.co/numobelez/nHLihij/vonup.pdf
    • https://cdn.sqhk.co/lafuwexale/WUoicDR/jesojaxotakonafadegonanur.pdf
    • https://betataniboluwi.weebly.com/uploads/1/3/0/9/130969090/e4675201259982.pdf
    • https://danegatazi.weebly.com/uploads/1/3/0/7/130776269/7970256.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://73856814-13bb-4d44-aeaf-752cce6ba6bd.filesusr.com/ugd/a0d21a_5180e20a88fd42ddb2a91fbda21b74f8.pdf?index=true
    • https://8a7e94d2-1b07-4399-8a7b-cfebf1eb419e.filesusr.com/ugd/e78b77_d7392c88aa0e4564a6967a9c940573e6.pdf?index=true
    • https://d90c6e9a-74f4-4e1e-b9b2-b16ff3e5d9fd.filesusr.com/ugd/136d07_7635863bdec24e1fa2046385cebaa8eb.pdf?index=true
    • https://s3.amazonaws.com/dinilederu/tennis_tv_guide_sydney.pdf
    • https://s3.amazonaws.com/xugigabitulu/adobe_premiere_pro_cc_frame_hold.pdf
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_e295439bb95a420aabf04a8ed7617c65.pdf?index=true
    • https://s3.amazonaws.com/mozirolinitaje/69318194637.pdf
    • https://53002a68-e35f-4167-ac88-1ab9777d7e72.filesusr.com/ugd/f5bc2a_55229f046754488aa0600fcbe36b7653.pdf?index=true
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_eb0c64fcb3374f85be6a2641bed77200.pdf?index=true
    • https://80b2a579-f9ed-4aa0-b91a-ac3c8973c086.filesusr.com/ugd/353d00_d7acf2e3194e41afa1d2ca0f2d0a1d00.pdf?index=true
    • https://s3.amazonaws.com/vuforewebub/tattoo_aftercare_advice_sheet.pdf
    • https://s3.amazonaws.com/poresi/62743741039.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012145.bin
dbe7d14036d9f9811055d108f3a1c476597de7f715d56b5b2955deb442559fe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12145 5624 bytes
font_01_sfnt_off00013464.bin
c401af607a63b5ae698cc95eba6ded61b7553e089e435cc147cb5e975c1704e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13464 11620 bytes

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