Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c6da478cf59ed8…

MALICIOUS

PDF

65.9 KB Created: 2020-11-12 17:18:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 808e6b6d992fb8ad1ac964ae2566501d SHA-1: 27d15cc9fbea389df5eba74859054bfbc20a97fb SHA-256: 08c6da478cf59ed83fff54ca6bc977aca1080359e1344ef3f87f1a2667f02893
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, and it contains multiple embedded links pointing to known malicious redirectors and link farms. The primary malicious link identified is 'https://ggtraff.ru/123?utm_term=shock+electrico+al+dormir', which is likely used to redirect users to phishing or malware-hosting sites. The presence of numerous PDF links suggests a link farm or a broad phishing campaign.

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 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.
  • 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://ggtraff.ru/123?utm_term=shock+electrico+al+dormir In PDF document text
    • https://luvepuxoworusoj.weebly.com/uploads/1/3/4/6/134660421/4737627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384828/normal_5fa4b640684f1.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/ab10a366407.pdfIn PDF document text
    • https://sowosevutab.weebly.com/uploads/1/3/4/3/134311467/6540889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5f87e3f3db179.pdfIn PDF document text
    • https://kexinebig.weebly.com/uploads/1/3/4/3/134338338/joxumarabidi-zuzidigolipuza-detiv-ragimo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d30273f-88ca-4a9e-97d8-d0609caedc82/39848583705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b84b34ed-3465-4842-9a74-879ebd5cc3b2/telafonagesone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/840d022e-72a6-4a0c-9a14-307251132097/33610105798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2375c57-37e7-41ed-bece-e4ea5f9c9347/fomumapukevazumilesaxuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/enhancing_english_speaking_skills.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/bepizulafi.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/41394899455.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c40a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC40A 5168 bytes
SHA-256: 1c15a3a37ea4dfbb2b6f43992ecb4a75d83546c205ae0c119c5912701a69037f
font_01_sfnt_off0000d575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD575 11132 bytes
SHA-256: 0c53e11706d27b70db781226bcc90f7704b7d6c5beeb986f48dde019235949c3

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