Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fca1e3dc21e42d1…

MALICIOUS

PDF

68.1 KB Created: 2020-12-17 22:35:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 857a2d86ca23ee022f7108456b6a9ab2 SHA-1: 99d51c77096ec5bdf91b5799ce02407253f061a0 SHA-256: 1fca1e3dc21e42d12eef8b5058511f5d4efc628d8c2936391b8ae8451e29412c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains a lure related to a job description. It embeds a URL pointing to 'traffking.ru', which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/strik?utm_term=water+treatment+plant+operator+job+description PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/bbc_iplayer_radio_app_no_option.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/hypoglycemia_in_dogs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea21e2fce462bc8c0024/t/5fc4147c7acac6192a407ada/1606685820625/practically_speaking_3rd_edition_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/8303503916.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/26350468826.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/does_cold_air_intake_increase_performance.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc509327848ba205d335311/t/5fcd53b305ddc9599d317071/1607291827560/wallpapers_for_phone_free.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/xeliwubonagib.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/88111915284.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf2be3eec7ca5c3653b3b4/t/5fd70a1c96ed101a3e57c43e/1607928348403/buzogapixejired.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc571e9abaecd331840d47e/t/5fc9ce0185627875175bd7f1/1607060994805/ways_to_avoid_traffic_congestion_on_roads.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/70418489705.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/algebra_tiles_worksheets_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57bb8281-2510-4f21-b663-86424f3855c1/jimevudutesemowojefu.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_off0000cc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0D 5448 bytes
SHA-256: ba46679255771932e3ba567e1782896ba923b3ffee935fd39572a98e28e5bac2
font_01_sfnt_off0000de82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE82 10396 bytes
SHA-256: 7c625b8ea64b674b442872580daf404b8f7934592d8ccd4d721bf504e2c22770

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