Malicious PDF — malware analysis report

Static analysis result for SHA-256 69efb82902865fa2…

MALICIOUS

PDF

80.1 KB Created: 2021-03-30 06:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7ce79f4df13006d8b8720241b498deab SHA-1: b0e015d109ff99a6330e288467bd2af4138b798c SHA-256: 69efb82902865fa218b9299891f4fb650a16d6a59db6fc31db255b19d2e7c434
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://baarspo.ru/strik?utm_term=best+classic+traveller+adventures PDF link annotation
    • https://jatasurow.weebly.com/uploads/1/3/4/3/134358583/japotugoravozomu.pdfIn PDF document text
    • https://xekawipafamut.weebly.com/uploads/1/3/4/3/134328312/6924518.pdfIn PDF document text
    • https://cdn.sqhk.co/kufusivekogo/h1gjhQ0/race_io_mod_apk_unlimited_money_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/gehbjcT/gifagomewa.pdfIn PDF document text
    • https://gipulafu.weebly.com/uploads/1/3/4/4/134442702/tupeji-worivamefofimo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382209/normal_60139a2c41e57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411229/normal_5febb0bd1c73e.pdfIn PDF document text
    • https://xalitive.weebly.com/uploads/1/3/4/3/134320973/6443797.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5fe5d3b503daf.pdfIn PDF document text
    • https://cdn.sqhk.co/muzipajat/he2ccic/rewogax.pdfIn PDF document text
    • https://cdn.sqhk.co/busoleva/jjh9zij/shop_disney_coupon_november_2020.pdfIn PDF document text
    • https://vexepediv.weebly.com/uploads/1/3/4/6/134668456/0aab15e.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/zosevid/free_lined_paper_template_for_first_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/61037167728.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/mijolusanine.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/55912059249.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/prince_harry_net_worth_2019_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/bimexove.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/how_to_remove_agitator_in_maytag_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/59612681098.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/browser_benchmark_2018_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/24858043072.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/chrysotile_asbestos_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/toreloligiregetipux.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/65217067575.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_off0000fcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC2 5040 bytes
SHA-256: cfa1439cb32762d7231219de0003d1f5a8563c6658391a4f3a5e1f9ccf72f170
font_01_sfnt_off00010dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DFA 10900 bytes
SHA-256: d0b267e2fdb3537cc3d549c540f2e25d6442b4463605395b3857edefe6f7c9ad

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