Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd8f17d41092d4d…

MALICIOUS

PDF

79.9 KB Created: 2021-09-23 02:01:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: b1e41bd872f7655e666793694f95040b SHA-1: b0525529e34f7d65bde3ca26676dadce46f31a5b SHA-256: 3bd8f17d41092d4d56be01937909eff2ba2f47b8c4520d3cbd9646f4c9a931f3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • 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.
  • 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://irlanc.ru/uplcv?utm_term=how+to+get+more+lifestyle+points+in+sims+freeplay PDF link annotation
    • https://vcvscr.cz/www/www/fckphotos/file/71434979434.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/dukij.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/35653198074.pdfIn PDF document text
    • http://classicalgardenfountains.com/uplds/file/99163166888.pdfIn PDF document text
    • http://mosvag.ru/img/lib/file/febudosiridikugerunixem.pdfIn PDF document text
    • http://holdemigny.fr/ckfinder/userfiles/files/32526632707.pdfIn PDF document text
    • http://thamdinhgiadaiquang.com/img/files/zekodokoxub.pdfIn PDF document text
    • http://fertilityupdates.com/userfiles/files/47426689608.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614712f0d33a2---78747410941.pdfIn PDF document text
    • http://air-con.ru/upload/files/donosidobawade.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/wamorugugibadog.pdfIn PDF document text
    • http://worldofpacifiers.com/editor_uploads/system/files/43323488361.pdfIn PDF document text
    • http://ideviceplus.nl/app/webroot/files/userfiles/files/35432774976.pdfIn PDF document text
    • https://fgcrubochi.com.ng/ckfinder/userfiles/files/88717382848.pdfIn PDF document text
    • http://karlsbach.de/userfiles/files/99220555824.pdfIn PDF document text
    • http://bloodfaces.de/attachment/file/pitimogewililajar.pdfIn PDF document text
    • https://beauty-full.ru/uploads/files/44009803263.pdfIn PDF document text
    • http://neteyes.eu/editor_up/rixutomunur.pdfIn PDF document text
    • http://yousefmaktabi.com/ckfinder/userfiles/files/gobut.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139cd8a77a01---64752579333.pdfIn PDF document text
    • https://merlak.ru/userfiles/file/41483725181.pdfIn PDF document text
    • http://www.anaja-inter.org/public/file/madovokoluwiwogaxoj.pdfIn PDF document text
    • http://bargiel.com.pl/ckfinder/userfiles/files/45612082783.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD346 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB58 17520 bytes
SHA-256: 7254116d7e99b473d130b4e81f995bd40bb2b027c9ceecf4c6cc55d13755c96a
font_02_sfnt_off0001188b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188B 10892 bytes
SHA-256: 7750d2678774cec5b97947281d6fc92d707c70bd8aafcff61457df0526616a0b

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