Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e7bd6332a205fac…

MALICIOUS

PDF

81.7 KB Created: 2021-01-11 03:45:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c6aff0b8df97ba9240d050dec0dc598f SHA-1: 0c6532c81abe01748d1f006324c0a75123b26846 SHA-256: 5e7bd6332a205facd30a5c1d752610bf96f01ab211146a3d1619544e3cb7f7c7
184 Risk Score

Malware Insights

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

The PDF contains multiple links to disposable hosting and a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://gettraff.ru/123?utm_term=pseudodragon+pathfinder+familiar In PDF document text
    • https://site-1173925.mozfiles.com/files/1173925/57892295505.pdfIn PDF document text
    • https://site-1178256.mozfiles.com/files/1178256/79742477068.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417145/normal_5fa02fbe99b01.pdfIn PDF document text
    • https://site-1177569.mozfiles.com/files/1177569/zorifabepuzamane.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378604/normal_5fa9be87164f4.pdfIn PDF document text
    • https://site-1173240.mozfiles.com/files/1173240/razas_de_perros_pequenos_peludos_para_ninos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379038/normal_5fd1bfab99aec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5fe8810bc473f.pdfIn PDF document text
    • https://site-1174356.mozfiles.com/files/1174356/jungle_run_game_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_5f891935836f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387933/normal_5f9c4e2b3008a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449629/normal_5fef3a0e147de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xuzakob/38111309340.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/install_oculus_rift_s_on_a_different_drive.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF654 5336 bytes
SHA-256: 959c53270b530ef6ad0bb7645f11ba70d51ea13f8dc5daedbe10dd87990e466e
font_01_sfnt_off00010843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10843 10472 bytes
SHA-256: 674cac62da5285e91e68e2cb492d1f58fa0bdd8b44db932d42c8fb27675c6d4d
font_02_sfnt_off00012c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C03 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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