Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7ee42161178560…

MALICIOUS

PDF

93.6 KB Created: 2021-04-23 09:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1c8c0e3cbdc8b959c057d1a1205d3f25 SHA-1: 52688fb138603c7355af0921e381698b6e890d52 SHA-256: 7d7ee42161178560d82c11e7e985146b4f4ccd235c15f16df040a6c427413101
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and likely phishing-related. It contains numerous external links, many pointing to SEO redirectors, with a primary lure URL being https://xezojetit.ru/strik?utm_term=al+fajr+clock+city+code+sydney. The document body is heavily obfuscated, but the presence of external links and the 'free-download phishing' heuristic strongly suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://xezojetit.ru/strik?utm_term=al+fajr+clock+city+code+sydney PDF link annotation
    • http://digovin.getenjoyment.net/antoine_de_saint_exupry_wind_sand_and_stars.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485705/normal_601a4f3e755a6.pdfIn PDF document text
    • https://tuzuratodaf.weebly.com/uploads/1/3/0/7/130738639/luteridolazi.pdfIn PDF document text
    • https://zadevadetolilug.weebly.com/uploads/1/3/5/3/135321342/3024548.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480414/normal_5ff788ebc2b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_60600294382fc.pdfIn PDF document text
    • http://rabizepafuxonag.mypressonline.com/38698340029.pdfIn PDF document text
    • https://volufijipezuji.weebly.com/uploads/1/3/4/7/134703795/watutavagawut.pdfIn PDF document text
    • https://zijobezugol.weebly.com/uploads/1/3/2/6/132682913/kodikusipelufuv-favetutag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/1730552695.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca97737c-4ada-456a-8470-9f08ef529638/semuxabeliminew.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/98563299542.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/84141545023.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/rugul.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/vosuripopamurafinonamuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a87f378-71e3-49e1-9bd7-c43c0f2077e6/75358587824.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/879c498e-406e-4279-8f3c-af37d1567f13/zopejavozonarufogivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5873ead-6058-4c56-8013-71fbf4174552/donate_clothes_near_me_nj.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/dugegel.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00013e21.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13E21 23476 bytes
SHA-256: 5c8cdc8a3a9b99c1cb42e600598ad09f1405a3d815cfb7c60e149efc86c0c900
font_00_sfnt_off0000eb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5D 5248 bytes
SHA-256: e736ee61fb55618a6232fb5335d181a47bf923b2f04d8bed3bb9bd404967f883
font_01_sfnt_off0000fd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4F 7068 bytes
SHA-256: 1842aff49c361096b712dac8aaac81a50c24195a00ce04cf7c6a1bcbea9ac5d0
font_02_sfnt_off00011692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11692 11932 bytes
SHA-256: 75d49df5d872dce23657dd343b8dee3982aaa681c6ec51283b6dce55a6e3e40b

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