Malicious PDF — malware analysis report

Static analysis result for SHA-256 363c632814730a53…

MALICIOUS

PDF

66.4 KB Created: 2020-12-18 14:00:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b7c0e625c864522ea3049cad4d7dfc6b SHA-1: d6d384df43d5898435d04c63492ef12aed8fd0df SHA-256: 363c632814730a535eda569c4c13f62749be2367d26172227d4c2ee93a56311c
210 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains heuristics indicating it is a malicious redirector and uses a fake invoice lure. The embedded URL, https://traffking.ru/strik?utm_term=stock+ledger+template+pdf, is identified as a known malicious redirector. The ML classifier strongly flagged this PDF as malicious, and ClamAV also detected it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to 'stock ledger template pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=stock+ledger+template+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4491157/normal_5fbdc59c27fab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457000/normal_5fa12179414e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490523/normal_5fd10874cd26c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409000/normal_5f97d093b2bb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f873b88ef6fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382781/normal_5fcc54826d1b7.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/5fc663ce27a199023adacf10/t/5fd5f08e267c8d0ace3b1ddb/1607856270434/43691746366.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc15c11ea4a794d564840ae/t/5fca0c8d1a258d244fe4874a/1607077006225/37886752109.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfceb2c14dfd36feeb11ef/t/5fc0ffd29ee0f32b87765303/1606483923400/dobadadifisetikabudax.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78b82d32fb7060d1273bc/t/5fd70097ab1a676c72a4754a/1607925921640/26230213706.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c362403f5353fd950a5e/t/5fc1d1169ee0f32b8795dfc7/1606537495686/usmle_step_1_first_aid_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/691568c4-c6c2-4efa-a15e-ff82bdc38d63/vorolegupije.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 4

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_off0000c483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC483 5464 bytes
SHA-256: 32da6183c630409fefc5018f058684c8e98e4deee7a7e1209139bc14600400db
font_01_sfnt_off0000d708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD708 11260 bytes
SHA-256: ce0793d585ebdfd762316a9ffcf341f6480e1b0cb1bbc464d3e06c45668045bc

Open this report in the interactive analyzer, or submit your own file for analysis.