Malicious PDF — malware analysis report

Static analysis result for SHA-256 4214ef5e96c7809e…

MALICIOUS

PDF

59.2 KB Created: 2020-11-19 04:11:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: bf0f7264eb19509f0cd423521553b164 SHA-1: 7ce5d68547082eaabe4c3b94461175f7507501cd SHA-256: 4214ef5e96c7809ebf1a9894be312c5a19242ed3dc369f8fe96ac1ce2074f02a
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to redirector domains, including 'ggtraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Silvia Pinal pdf gratis', indicating a phishing attempt to trick users into downloading potentially malicious content. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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.
  • 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://ggtraff.ru/strik?utm_term=esta+soy+yo+silvia+pinal+pdf+gratis In PDF document text
    • https://semezuzuxikazug.weebly.com/uploads/1/3/4/2/134234688/topodunebajimu.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/sexokijaxelatidozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449998/normal_5fb028104033c.pdfIn PDF document text
    • https://waripeseditalas.weebly.com/uploads/1/3/4/0/134012866/4753739.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/tupudelo-pesilep-zodefifukabupa-naxigo.pdfIn PDF document text
    • https://pekedilude.weebly.com/uploads/1/3/4/3/134324883/gejuxuvasonavorewuko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391303/normal_5f8e9356548bb.pdfIn PDF document text
    • https://vukijimox.weebly.com/uploads/1/3/4/3/134358494/kezowudeguporefeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9ebd493-cb21-4db7-b7e0-08b4515b87fa/72398618298.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAD3 5328 bytes
SHA-256: 3fbe3ed6199c6b3c3d33d4d17f42de343c766182c88e67eed525a4a957cbc762
font_01_sfnt_off0000bd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD18 10224 bytes
SHA-256: 2c2a7beb16a4295deb68d34e7207f4e7dff62ac93a84d2a6fddf1b934c579bc4

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