Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f668163ab8a342…

MALICIOUS

PDF

60.3 KB Created: 2020-12-01 02:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1deff5a70344f97515854e0fb60f377d SHA-1: dda2fa738bbe71bf019f89c42875a4f0e894a856 SHA-256: b2f668163ab8a34204809480422f99444594a3b21d228e1321cc78642b4d34dd
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/strik?utm_term=graco+pack+n+play+on+the+go+finch PDF link annotation
    • https://lutilaxo.weebly.com/uploads/1/3/4/5/134599665/16f524.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0187aa5bc066edfa15e28/t/5fc0e5804e98326c0231590d/1606477189868/muzigipagisixomulora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67222abd-83be-4bcf-ae81-ab4523a02219/20379079566.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/guide_to_storm_king_s_thunder.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9fec917750a3d7b949/t/5fc1767d3f75b166430baecf/1606514302072/99895818105.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e15d7d0c8f249d40b1da/t/5fc31f65f81c9a2a0c08afce/1606623078143/42424581664.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1162b68612547ed5f39f0/t/5fc51312f3de5e49b505ef0b/1606750995372/pampered_chef_rice_cooker_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/printable_box_top_collection_sheets_50.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d7ea888-43c4-4e57-938c-56b4d1f4010c/64185976765.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3f4a6457125654065f65/1606303563362/lifetime_sport_fisher_angler_10_ft_kayak_with_paddles_90157.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e9e3bda9c57a97be47bf/t/5fc1858b3570fb44d13c7524/1606518160386/paint.net_no_background.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 6

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_off0000ae08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE08 5296 bytes
SHA-256: b8b4e106b3dd54c0aa049b4a8a7e97fb2ad12376a16dfce5714c348572cc5c36
font_01_sfnt_off0000c01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01F 10872 bytes
SHA-256: 09aa410e48fe664301ef05b2c294ac57ebf4d05f5ab27e8b770a5dd1700c847e

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