Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2dec7d9c2d1a53…

MALICIOUS

PDF

71.4 KB Created: 2020-12-02 19:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40e658a91f50f74f692ec57f4640e28a SHA-1: 7c717fe533102ccf6d5db4447d09d52f40213f34 SHA-256: 2c2dec7d9c2d1a53b3be19b1a4348a8870fb64cb63c44d4abde910b673409665
214 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to redirector infrastructure, indicating a link farm designed to lead users to malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags the URL 'https://cctraff.ru/strik?utm_term=fortnite+christmas+anthem+lyrics' as a known malicious redirector. This suggests the primary goal is to direct users to potentially harmful content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/strik?utm_term=fortnite+christmas+anthem+lyrics
    • https://cdn-cms.f-static.net/uploads/4465136/normal_5fa7c596a1509.pdf
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5fa7e46d1c58f.pdf
    • https://cdn-cms.f-static.net/uploads/4373241/normal_5fb27e3673afc.pdf
    • https://static.s123-cdn-static.com/uploads/4416144/normal_5fc4154b4e56a.pdf
    • https://cdn-cms.f-static.net/uploads/4379374/normal_5f9a1ef5ded00.pdf
    • https://cdn-cms.f-static.net/uploads/4491673/normal_5fad9e4c1f85b.pdf
    • https://static.s123-cdn-static.com/uploads/4446494/normal_5fc7c6e1c2e3c.pdf
    • https://cdn-cms.f-static.net/uploads/4469623/normal_5fa92a6253956.pdf
    • https://cdn-cms.f-static.net/uploads/4384464/normal_5f8c47e44a830.pdf
    • https://sebanibukuj.weebly.com/uploads/1/3/4/3/134354661/sojuxixadowuxume.pdf
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5f9aba0d38c55.pdf
    • https://xamudoniganotew.weebly.com/uploads/1/3/4/5/134509964/fufavop-birezos.pdf
    • https://cdn-cms.f-static.net/uploads/4428341/normal_5fafdf0c6e9c2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5d59c6c5-1103-4684-987f-a32e055d4f71/31130197695.pdf
    • https://uploads.strikinglycdn.com/files/b6ad1c80-fe1b-4d0b-b248-bfa577267ad7/dice_bag_pattern_sewing.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d056.bin
0edbeb769d05c404028c3b7134483c7a51ba077fa89a399d84231211f060ebfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD056 5096 bytes
font_01_sfnt_off0000e182.bin
a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE182 3720 bytes
font_02_sfnt_off0000ece2.bin
b4fb5a271523fe902257b59e88adb0fc60a0cb458fa651b157543350f742d337		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECE2 10252 bytes

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