Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e526e10cbbabc55…

MALICIOUS

PDF

76.3 KB Created: 2021-01-21 01:55:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 97befc9d3ecdaac0417f926eb5f336b5 SHA-1: ed6130ab634f1b9e4714439a7f6560c91c0f30f2 SHA-256: 7e526e10cbbabc550610d75ac1c14407d671656d7dc1bba1ffce771e4989c3e9
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many of which point to disposable hosting services and redirector infrastructure. The heuristic firings indicate that the document is designed as a link farm, likely to manipulate search engine rankings or to direct users to malicious sites. The presence of a link to 'cctraff.ru' further suggests a malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?utm_term=how+to+unfollow+everyone+on+twitter+2020 In PDF document text
    • https://gaxasexafarud.weebly.com/uploads/1/3/4/5/134590452/5562834.pdfIn PDF document text
    • https://vemusosafuz.weebly.com/uploads/1/3/1/3/131398108/2017875.pdfIn PDF document text
    • https://site-1251314.mozfiles.com/files/1251314/78735559524.pdfIn PDF document text
    • https://xutativapejan.weebly.com/uploads/1/3/4/5/134521393/2711765.pdfIn PDF document text
    • https://bevubulik.weebly.com/uploads/1/3/2/6/132680874/kurogozebamoziwot.pdfIn PDF document text
    • https://molobaguzali.weebly.com/uploads/1/3/0/7/130739923/siwozowikofajuguzis.pdfIn PDF document text
    • https://site-1178883.mozfiles.com/files/1178883/fulcrum_racing_zero_road_bike_wheels.pdfIn PDF document text
    • https://site-1166673.mozfiles.com/files/1166673/lucky_mp3_song_downloadming.pdfIn PDF document text
    • https://kidivine.weebly.com/uploads/1/3/4/5/134576756/7c02df9e7d4.pdfIn PDF document text
    • https://werevofapopaja.weebly.com/uploads/1/3/4/4/134492388/cff131.pdfIn PDF document text
    • https://mumovukejepi.weebly.com/uploads/1/3/1/4/131483147/8cee2d2318.pdfIn PDF document text
    • https://site-1168315.mozfiles.com/files/1168315/luigi_s_mansion_theme_sheet_music.pdfIn PDF document text
    • https://site-1242588.mozfiles.com/files/1242588/map_of_usa_states_worksheet.pdfIn PDF document text
    • https://xopozutafedas.weebly.com/uploads/1/3/1/4/131453480/sumufanipigofuvus.pdfIn PDF document text
    • https://nugilura.weebly.com/uploads/1/3/5/3/135317706/dituxuvebejali.pdfIn PDF document text
    • https://site-1172798.mozfiles.com/files/1172798/thank_you_for_being_here_tik_tok_meaning.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/nimuwet/watch_anime_updated_catalog_apk.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F4 4864 bytes
SHA-256: e69e914aebd21aa589b6233fc900b2ea888b7d63c6d0bbda132da29ee3da9e92
font_01_sfnt_off000101b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B1 10144 bytes
SHA-256: 9e903272bbeb170d02f594682b97f37f4dba3d181a2c508c0b5f2bf9f3b1a96a

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