Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e80f9f0b65f45e8…

MALICIOUS

PDF

74.9 KB Created: 2020-11-09 20:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2d2f07bfee8bcf70b40fd10903604ac0 SHA-1: dea7584bca5075bacacf6ef8b63ded2fef88477c SHA-256: 8e80f9f0b65f45e8031c0dcff4beeb97bb8307a302514c26c9d5eac135bed006
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 0.9997

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://traffset.ru/strik?keyword=marvel+guardians+of+the+galaxy+123+movie PDF link annotation
    • https://lotogifivetizub.weebly.com/uploads/1/3/4/3/134309957/valipadeguvume_lonemud.pdfIn PDF document text
    • https://puzemebakojufem.weebly.com/uploads/1/3/4/2/134234574/zalofuxorifotuk.pdfIn PDF document text
    • https://sibomimotilelib.weebly.com/uploads/1/3/4/2/134235458/demebupa.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fuzatolo-suvibesutisozuw-modipo.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.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/rupatojuko/73557450855.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/elms_country_club_massillon_oh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c04d31e-a54b-4a3c-b210-65348f616d33/rise_social_link_persona_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afce7224-4bbc-42d0-927a-9197c6e0d3d6/nebijezimimonidebiwumaja.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/verizon_insurance_claim_number_to_call.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/simifakirobuwufusediwemeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a487a7e-1326-428c-a679-7aceac81711c/ruratujixepari.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/happy_eid_adha_2020.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_off0000d800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD800 5788 bytes
SHA-256: ee13510bec6dc4dd8ff80e6d601aec4faf9501804f22a15109ee0ca799b26fa4
font_01_sfnt_off0000eba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA1 11212 bytes
SHA-256: f501bf3b7d8bb304f48640c1422b3de072a31dfb82ab6dd174243c1444f0bffd
font_02_sfnt_off000110ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EF 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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