Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae890153f4bf94f…

MALICIOUS

PDF

75.4 KB Created: 2021-02-24 05:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e57e322cdd0090b83f4c75c27196ae7d SHA-1: 59da9928d157b72fc5d0fc7a542124f6dedb548e SHA-256: 2ae890153f4bf94fd0808af503817a66e59929f04b9aab0b219ef76b6b411ccf
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links pointing to disposable domains, a common tactic for SEO manipulation or distributing further malware. The document body is heavily obfuscated and unreadable, suggesting it is not intended for direct user interaction but rather as a container for these malicious links.

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
  • 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.
  • 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://baarspo.ru/wix?keyword=ffxiv+suzaku+guide+normal PDF link annotation
    • https://xoxoxiwozolem.weebly.com/uploads/1/3/0/7/130739626/3874523.pdfIn PDF document text
    • https://dubasebajulux.weebly.com/uploads/1/3/1/3/131382081/9f33245758d8.pdfIn PDF document text
    • https://buwavazazaradig.weebly.com/uploads/1/3/3/9/133999961/9690643.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474478/normal_6001e2d12c49f.pdfIn PDF document text
    • https://nuxinipimop.weebly.com/uploads/1/3/2/6/132682773/sijovezolin.pdfIn PDF document text
    • https://mikatafa.weebly.com/uploads/1/3/1/3/131398449/vafere_wanepejanuxujux_tijekedoji.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/heuToyg/46745838327.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452618/normal_5fe1120ed6b15.pdfIn PDF document text
    • https://kujuxase.weebly.com/uploads/1/3/4/5/134584075/rabevafup_rujodapivupan.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/igijiaG/narune.pdfIn PDF document text
    • https://nokojuponamipi.weebly.com/uploads/1/3/4/8/134891784/4276637.pdfIn PDF document text
    • https://wutejaguruloz.weebly.com/uploads/1/3/1/8/131871665/2e5a91bcf1c42.pdfIn PDF document text
    • https://redelonoxoti.weebly.com/uploads/1/3/1/6/131606094/1fb41ac51.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/kerosa.pdfIn PDF document text
    • https://cdn.sqhk.co/fofasafiwi/ggjgdif/95362374764.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365601/normal_5ffca02402aee.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/87jgjhj/warlords_of_new_york_sale_ps4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • 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_off0000d650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD650 5424 bytes
SHA-256: 896a7a4b053c6f84de7307d6c0995f3a3dce60dbf2545bf650cba3ba8fbb3491
font_01_sfnt_off0000e8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CD 10076 bytes
SHA-256: b5153d25b03a8d55b5b9f9fdb5d6a572ae381137ecbf79db37bd2b47b66a32ef
font_02_sfnt_off00010b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9C 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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