Malicious PDF — malware analysis report

Static analysis result for SHA-256 9625d9c61ed7bd33…

MALICIOUS

PDF

92.2 KB Created: 2021-03-06 03:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1ea18bd5d7e2444363e186f6c1070fc SHA-1: 95e04b23e615698381f14f0db797ced1b02ac88f SHA-256: 9625d9c61ed7bd33c8ee2849723867ff82456478bd9702dfd4e29fae61c29b33
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm, with numerous external URIs pointing to other PDF documents. The document body, though heavily obfuscated, suggests a lure related to religious text. The primary purpose appears to be redirecting users to a large number of external sites, likely for malicious purposes such as phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://golowaki.ru/123?utm_term=surah+mulk+arabic+text+with+urdu+translation
    • https://tajafakedebufu.weebly.com/uploads/1/3/1/4/131438499/ec1a0ea73fe.pdf
    • https://cdn-cms.f-static.net/uploads/4419193/normal_5fe8ef759452f.pdf
    • https://cdn-cms.f-static.net/uploads/4392857/normal_5fea0a442d985.pdf
    • https://cdn-cms.f-static.net/uploads/4409997/normal_601b8fbd3e887.pdf
    • https://static.s123-cdn-static.com/uploads/4417315/normal_60069b0e65825.pdf
    • https://cdn-cms.f-static.net/uploads/4500425/normal_5fd09e0e47783.pdf
    • https://static.s123-cdn-static.com/uploads/4403804/normal_6005d7715710a.pdf
    • https://cdn-cms.f-static.net/uploads/4464521/normal_6037775545dac.pdf
    • https://cdn-cms.f-static.net/uploads/4443619/normal_601563024d475.pdf
    • https://cdn-cms.f-static.net/uploads/4464082/normal_600aeb78dd006.pdf
    • https://cdn-cms.f-static.net/uploads/4367922/normal_601af6ad7179e.pdf
    • https://static.s123-cdn-static.com/uploads/4448103/normal_6002529677c46.pdf
    • https://dowisapi.weebly.com/uploads/1/3/4/2/134266119/e22e7021c0608ff.pdf
    • https://cdn-cms.f-static.net/uploads/4454561/normal_602a9598decc5.pdf
    • https://cdn-cms.f-static.net/uploads/4390381/normal_6035e373f0d4e.pdf
    • https://cdn-cms.f-static.net/uploads/4453102/normal_6027f4bb00a75.pdf
    • https://cdn-cms.f-static.net/uploads/4453344/normal_60203df49df92.pdf
    • https://xorewodanuvidiw.weebly.com/uploads/1/3/1/3/131381095/4926851.pdf
    • https://static.s123-cdn-static.com/uploads/4420764/normal_60017a8350c94.pdf
    • https://static.s123-cdn-static.com/uploads/4489032/normal_5fca0477ed375.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xulikamul/72403499500.pdf
    • https://s3.amazonaws.com/xeponodij/stephen_king_it_movie_cast_1986.pdf
    • https://s3.amazonaws.com/tufitijinexu/zowaponapu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d06.bin
45ee9c68e3a3975da13ecac4415ce56079d190fefeaf9dada56e0561cb803391		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D06 5648 bytes
font_01_sfnt_off0001401b.bin
973ee87c7815daa9c1e72b115cec469f5cc2b0f1b0334f50b653b42bbca963a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1401B 10328 bytes

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