Malicious PDF — malware analysis report

Static analysis result for SHA-256 1154d491b4b74767…

MALICIOUS

PDF

70.9 KB Created: 2020-11-10 20:01:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 34aa6c1d0dcd0e2997b7f5c8185ee129 SHA-1: 23277c0a5041c8abfd0d12b29a36c3b2c464bb69 SHA-256: 1154d491b4b74767f0292e25e04151f75067abee70cbaffbb0785d9393f1ab4b
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 0.9998

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://traffset.ru/123?keyword=elite+tv+app PDF link annotation
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/nibupitola-valonuzuz-jarulapozot.pdfIn PDF document text
    • https://wexabegolorumad.weebly.com/uploads/1/3/4/3/134351445/tikem_kadaxutotifower_nuvopokab.pdfIn PDF document text
    • https://razulusajo.weebly.com/uploads/1/3/4/4/134467314/wukoweto.pdfIn PDF document text
    • https://josugonu.weebly.com/uploads/1/3/4/4/134488469/6765174.pdfIn PDF document text
    • https://kubuwexujilo.weebly.com/uploads/1/3/4/4/134473085/jikilubezamoluxe.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/miwopude.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/3662564.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/pazifetanegapu/quantitative_approaches_to_management_levin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2efa5186-9499-457b-bffc-e58f56ca4e77/vazogij.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/nasejebifejozepuvigasel.pdfIn PDF document text
    • https://s3.amazonaws.com/mogelebolep/wilmington_nc_white_pages_phone_book.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/53844259012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/269be1a2-5d1a-4e5c-961b-c123f7a25897/43078347181.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/chocomilera_translated_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/another_word_for_style_of_dress.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/kofaxuzipeliritudagurutul.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4A 4556 bytes
SHA-256: 26c3d085b42f194a4f0d295a778375696fccb0e4ef740e530f44c5f2d5362ebf
font_01_sfnt_off0000e9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 11116 bytes
SHA-256: 494fccb54f1bf7b7fd9aa64e2faed765278b62a513f2682188f01f8bb1943fd2

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