Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c915288aa119d5…

MALICIOUS

PDF

74.6 KB Created: 2021-03-22 20:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9efa4e1ae964281648a5b4bf3c767d60 SHA-1: 360aea19b27e3445f766e59ad2ceb838ba1384c8 SHA-256: c6c915288aa119d5426a2e15ef40621d23ec52afd6a1ada258f7a44811c67dd2
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://jacksth.ru/strik?utm_term=are+there+any+recalls+on+evenflo+car+seats PDF link annotation
    • https://senapuvuv.weebly.com/uploads/1/3/4/4/134459053/5664747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380072/normal_602a477170b0e.pdfIn PDF document text
    • https://cdn.sqhk.co/nebemina/iicghWO/lezuganejeraweru.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/iiibgjq/44269457940.pdfIn PDF document text
    • https://povebosi.weebly.com/uploads/1/3/5/3/135346093/572757.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406771/normal_6000f2f4b65bd.pdfIn PDF document text
    • https://cdn.sqhk.co/ridijafugemi/aihBjev/dixamozugaravusevabu.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/xijuxosisomuna/how_to_learn_coding_for_free_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/jabadisukoz.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/kopavug.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/48440543077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1f37616-1ec9-4ca2-8a69-d997d3e8527c/zebufadavila.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/82061121823.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F4 4860 bytes
SHA-256: b30ae24feb905f4b3fc59d62d5a5de6e76d7b9734e172b76062d77c8314b38a4
font_01_sfnt_off0000ea76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA76 10864 bytes
SHA-256: 773a7effee402e986f87b6a5d183bd86e4d95737b3dcc4c95aaf2bda211156f0
font_02_sfnt_off00010f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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