Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9634ded7c0dd970…

MALICIOUS

PDF

74.0 KB Created: 2021-01-27 13:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 188d4762b7721e5f3c5f74f983d3d925 SHA-1: f52f14e8926f5d692849a3f488f36d71dc8bbbd6 SHA-256: e9634ded7c0dd9703137ac1f8e0c2eaa09a9f18d8efaf43a0df0c14437c9f394
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm or a phishing lure. The document body mentions "Norton product key generator 2018", indicating a social engineering pretext to trick users into clicking malicious links. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

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://druttle.ru/123?utm_term=norton+product+key+generator+2018 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369305/normal_5ff772bbd44b9.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/82038631584gloje.pdfIn PDF document text
    • http://discout.online/zeminaxny5zz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_6011275dc079a.pdfIn PDF document text
    • https://kuxodebareku.weebly.com/uploads/1/3/4/0/134042390/joxapuragedesififal.pdfIn PDF document text
    • https://wojodusu.weebly.com/uploads/1/3/2/8/132815854/f614f102e096b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375196/normal_5fff9babb4382.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427086/normal_6003f81261f7c.pdfIn PDF document text
    • https://totaguzoxexidi.weebly.com/uploads/1/3/2/7/132741029/wubixagug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393485/normal_5fcc2ccb683a1.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/jifesu/english_vocabulary_quizzes_with_answers.pdfIn PDF document text
    • http://lowadof.epizy.com/possessive_form_apostrophe.pdfIn PDF document text
    • http://kiduvunizujenav.rf.gd/kabbalistic_tree_of_life.pdfIn PDF document text
    • http://zezazemana.epizy.com/xabovomegofipakatumepuxew.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_off0000dc63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC63 5688 bytes
SHA-256: 6fdbd198d96ca525a990baac8bcf38b144c7dcde05557bbfad6ce20ab326457a
font_01_sfnt_off0000efe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE5 15352 bytes
SHA-256: 180644710d6bc1a5208aec327968a2ab18212456439a055a295e641c2ed91d16

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