Malicious PDF — malware analysis report

Static analysis result for SHA-256 7892d902c9fa352c…

MALICIOUS

PDF

81.5 KB Created: 2020-11-29 08:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: eb710481e2b613e1c8f3965cf24dc4cf SHA-1: 7f6e34160584749542d1237091b802810faa1a66 SHA-256: 7892d902c9fa352c7460801d53bb33115c3435d8ccfc5466ab285e23a08dbff9
214 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external websites. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://traffking.ru/strik?utm_term=pokemon+macho+brace+exp+share'. The ML classifier and ClamAV also flagged this PDF as malicious, indicating a phishing or trojan distribution attempt. No scripts were extracted, but the extensive link farm suggests a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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.
  • 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=pokemon+macho+brace+exp+share In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_5fb6292b907cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413969/normal_5fa44cfcee94c.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/gimufibez-pepufejat-tabok-todemene.pdfIn PDF document text
    • https://kenawogerawe.weebly.com/uploads/1/3/4/5/134593039/tevira-dudixul-xunituzedapo-gisobusoxeviker.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374688/normal_5f9c25a984cb7.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/3e2eedb3-af07-4563-8ec8-2d598e72e221/criterios_de_la_conducta_humana.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/30036510301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ee177d1-8405-4811-9439-055702fd1dec/34358994489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57439a86-109e-4349-b7aa-18869ce6b127/rojufitogizap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6201226f-1840-4ab0-be43-c2e25e7abbdb/7579143255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ee80337-a849-411b-8b2f-7068e09ddc0d/khalnayak_movie_song_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/45187340185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/429fd340-1560-4260-a80b-b4305e3ad215/45568933086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a802a2f-450f-4df1-babf-5cbba0625d32/28507203320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f40c99a-d055-4b60-88ab-2582a9541fad/pufipo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD903 4600 bytes
SHA-256: 6a8ac5dd9eea756e09627e5cc688420734a7b645822509595c4d282a4f922e79
font_01_sfnt_off0000e927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE927 5416 bytes
SHA-256: c41957beffec3313680fc34841f1d9da1701a888d05e932469edb056f0b16675
font_02_sfnt_off0000fb66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB66 11180 bytes
SHA-256: ecee989d0ced87483006a4346467e0d8b30ffd69d124ead79f930a1dc6234754
font_03_sfnt_off000121a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121A8 16232 bytes
SHA-256: 03fb9e80ac15957caf35655d2164ce90bc22347e6f71eeaeba3d30609007e27c

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