Malicious PDF — malware analysis report

Static analysis result for SHA-256 8700579baf79125c…

MALICIOUS

PDF

81.6 KB Created: 2021-02-16 09:39:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 341c34eeb647f7ce3af3275504b97937 SHA-1: 0ba1b656d724df186e4e01606238f73614944851 SHA-256: 8700579baf79125cc177739d763cccb897506fa3689f5f749d363a316f44c056
136 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 was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that acts as an SEO redirector, leading to 'https://leonvi.ru/123?utm_term=sierra+blitzking+223+reloading+data'. This suggests the document is designed to lure users into clicking the link, likely for phishing or to download a secondary payload. No scripts were extracted, but the PDF structure and heuristics point towards exploitation.

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
  • 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.
  • 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://leonvi.ru/123?utm_term=sierra+blitzking+223+reloading+data PDF link annotation
    • https://cdn.sqhk.co/kekotenonaxu/gRgiLN3/sani_cloth_hb_wipes_sds.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_600a8834dda1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460076/normal_5fe7475e5827b.pdfIn PDF document text
    • https://cdn.sqhk.co/wifinalimow/Gkzihjf/52080600423.pdfIn PDF document text
    • https://wobelafesuta.weebly.com/uploads/1/3/4/7/134767333/2550345.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496582/normal_5fe81b1b3a730.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/dhfgcej/fruity_fruit_smash_soda_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/EQhbjcG/xfinity_prepaid_box_phone_number.pdfIn PDF document text
    • https://kadogejajufa.weebly.com/uploads/1/3/4/7/134717900/sulepu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gomaxod/motodomeguj.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/wifinupogares.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/37067307371.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/workbench_dog_hole_template.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_off0000f53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53E 3008 bytes
SHA-256: 3cb77c27a01d7f5556bdf778373029e224f994723dcaefd769dac97423b89c8b
font_01_sfnt_off00010007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10007 5468 bytes
SHA-256: 54f3dc048f0fe904fbb37726382bea0619801ba31f3c63bd7511032deb581b9d
font_02_sfnt_off000112b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B3 11284 bytes
SHA-256: 42de34450a1c89597ab069d3e60a7044e914eb60f9b92346e1c474e8bc7c6c1f

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