Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f22105dff4f4301…

MALICIOUS

PDF

35.5 KB Created: 2020-05-16 07:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 2fd6db47c0def0b9bc6d4684d3532b36 SHA-1: adc2e80ca0f827168c9d4297fe85c8d66fd0eb06 SHA-256: 7f22105dff4f43012bd7fdd70e21cb6a8059be8a598d4326a3ca2111f23d243e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links to various domains, suggesting a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the sheer volume of external links points to a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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 http://nupelicanparty.org/uploads/1/3/0/4/130488067/130488067.html#berberine+and+metformin+taken+together PDF link annotation
    • http://mylesateliersdenine.com/uploads/1/3/0/7/130776175/3526782.pdfIn PDF document text
    • http://doareumatodeamorebeleza.com/uploads/1/3/0/7/130775639/kizilozi.pdfIn PDF document text
    • http://cashmerebodywork.com/uploads/1/3/1/3/131383266/biwodupafobupuzaxak.pdfIn PDF document text
    • http://chieftainsrugby.com/uploads/1/3/0/2/130289226/8c8ead12c6.pdfIn PDF document text
    • http://limonmasonry.com/uploads/1/3/0/8/130813586/sexatasuramigodusa.pdfIn PDF document text
    • http://supatools.com/uploads/1/3/0/7/130776322/2630055.pdfIn PDF document text
    • http://apcopafe.com/uploads/1/3/1/3/131381167/duwolagibi.pdfIn PDF document text
    • http://bigsandymontana.com/uploads/1/3/0/6/130639885/mowukuz.pdfIn PDF document text
    • http://theaxistence.com/uploads/1/3/1/3/131381839/1353992.pdfIn PDF document text
    • http://idea15-interior.com/uploads/1/3/1/4/131437425/7430473.pdfIn PDF document text
    • http://h20engineering.net/uploads/1/3/0/3/130312951/viluba-zuwuzo.pdfIn PDF document text
    • http://meetrobyn.com/uploads/1/3/0/7/130775866/6272010.pdfIn PDF document text
    • http://outside-interiors.com/uploads/1/3/1/0/131070579/kigowodabix-zivaxane.pdfIn PDF document text
    • http://babystrollerexpo.com/uploads/1/3/0/7/130738720/xatido.pdfIn PDF document text
    • http://wallepikkers.nl/uploads/1/3/0/2/130274241/kokikok.pdfIn PDF document text
    • http://bridgetgelms.com/uploads/1/3/0/7/130739653/pomif_dugenenij.pdfIn PDF document text
    • http://sweetwaterfarmsllc.com/uploads/1/3/1/4/131454151/0dcfeda4a4e6.pdfIn PDF document text
    • http://thebourbondictionary.com/uploads/1/3/0/4/130488935/vetazetujo.pdfIn PDF document text
    • http://absolutebestquotes.com/uploads/1/3/0/8/130873851/6584976.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F58 10196 bytes
SHA-256: b3b23dfaf527073e6accf24ec6245b0b55855d76b43c81c88f05270f2c58e16e

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