Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08b23c228660383…

MALICIOUS

PDF

64.6 KB Created: 2021-02-17 20:37:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9e7d69b0cc47074060d4105022e20420 SHA-1: 91ff43383ebc282670318f814b009785ea00e7ef SHA-256: d08b23c22866038350e92c93bc4f0256d72333b10dac770a6d785c4568e10819
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, with a significant number pointing to Weebly and other domains, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, appears to be a lure related to a 'Dyson dc25 service manual pdf', aiming to trick users into clicking malicious links.

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://jacksth.ru/wix?keyword=dyson+dc25+service+manual+pdf PDF link annotation
    • https://lewisenoj.weebly.com/uploads/1/3/0/9/130969481/4920591.pdfIn PDF document text
    • http://shop-you.xyz/foturosuwelituvajumeu9z4n.pdfIn PDF document text
    • https://rogubadivuna.weebly.com/uploads/1/3/4/3/134337887/maxosuru-melatawu.pdfIn PDF document text
    • http://hookup153.online/dermatix_silicone_gel_sheetsnzze5.pdfIn PDF document text
    • http://tuimag.ru/piwifavoloxepepo9wrp5.pdfIn PDF document text
    • http://natbeach.space/badrinath_telugu_movie_tamilrockersp1koi.pdfIn PDF document text
    • http://rollernefritmassage.xyz/42051853437ag5k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451561/normal_5fd08d3d74b8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504641/normal_5ff87ba13f12e.pdfIn PDF document text
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/6373272.pdfIn PDF document text
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/713031.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/beautiful_love_couple_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/bahubali_3_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/coronary_artery_disease_prevention_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/kovop.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/bahubali_2_tamil_full_movie_tamilrockers.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_off0000c0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E3 5716 bytes
SHA-256: 6ef5e33602a18b4d4d99b8b743459d1c6bce0dda5fcbeeee25324ce6e21fef87
font_01_sfnt_off0000d457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD457 9700 bytes
SHA-256: 207a6012d01ffd33e335c65178969d5e5b2f7dc9a30119f039d335591d95f979

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