Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe5eafbcdcd575f…

MALICIOUS

PDF

78.9 KB Created: 2020-12-28 20:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12ee21b51e09306fefb4d7794d53cccc SHA-1: eb961a2571fabbd8037cbf1777873bb61ac8a61a SHA-256: 0fe5eafbcdcd575f6fa08890747c02567f7de8612ae1974e8bdf204327ddec82
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine results or redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links point towards a malicious document designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://trafftec.ru/123?utm_term=schopenhauer+pdf+deutsch
    • https://cdn.sqhk.co/xulawajikigi/jj3he4u/porinuxivaluwugemi.pdf
    • https://cdn-cms.f-static.net/uploads/4450635/normal_5fa8ad1ae6abd.pdf
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/4546274.pdf
    • https://cdn.sqhk.co/pidefatop/ihjigjT/73095772110.pdf
    • https://cdn.sqhk.co/vipabumumiw/ONvpJjd/1532125910.pdf
    • https://cdn-cms.f-static.net/uploads/4379049/normal_5f9b0d8a8cbe9.pdf
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5f92068de7ed4.pdf
    • https://vafukomoruf.weebly.com/uploads/1/3/4/8/134862603/1404238.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jafujasiwetid/airline_tycoon_2_product_key_free.pdf
    • https://s3.amazonaws.com/kavugusepe/preparation_of_aniline_lab_report.pdf
    • https://s3.amazonaws.com/povodijirig/58000109553.pdf
    • https://s3.amazonaws.com/vawoginele/javizafurawojefarekuripuz.pdf
    • https://s3.amazonaws.com/fupanabivote/zubirumabitomomum.pdf
    • https://s3.amazonaws.com/kozibowisenatu/aankh_maare_simmba_song_video.pdf
    • https://s3.amazonaws.com/luramamelolem/ich_guidelines_for_pharmacovigilance_slideshare.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb1c.bin
ed0e68871f1e3b5f72a8c96b62db728def8b8fc56cd6ce8402186ae072d5b80d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1C 5148 bytes
font_01_sfnt_off0000fc7f.bin
851fa27c7dbc5da28dbedbb7ad5c843bc288ecb87b6f59b7702fe04f2540741a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7F 10944 bytes
font_02_sfnt_off000120b5.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120B5 4324 bytes

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