Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb10ab6610ceefb…

MALICIOUS

PDF

80.7 KB Created: 2020-10-30 02:37:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8a4d9f850542d778d38efbb450491943 SHA-1: 9a93b452a21a2f7e84d65f2e4363a479ea72abdd SHA-256: 1eb10ab6610ceefb1aa1072b566893b20e155ccb116ee5a8513cfa2c21be8b3a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically to 'https://gettraff.ru/aws?keyword=world+history+studies+weekly+week+28+answers'. The document body, though heavily obfuscated, contains this URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://gettraff.ru/aws?keyword=world+history+studies+weekly+week+28+answers In PDF document text
    • https://belonimilulufaf.weebly.com/uploads/1/3/4/4/134403367/rejilikijarov_liguxupi_bubiref.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f88ecd40344a.pdfIn PDF document text
    • https://zepixufiguw.weebly.com/uploads/1/3/4/1/134108583/fuginofuxobubi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0390/4676/files/romuzojirazinusorimep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9344/0697/files/descargar_spotify_premium_gratis_apk_ultima_version.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/sopapuseligaxisulubidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8516/3415/files/base64_to_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4332/1537/files/gta_cheats_pc_full_list.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/bepukodejukopagat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2481e97-baab-4e1b-aad7-35dad5da4bb0/tinuzewo.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/qm_for_windows_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf4a627f-c62e-432a-b0df-ebc65f85f130/26015326447.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_off0000ffb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB2 5508 bytes
SHA-256: 75d9b3541b2ce4ee2f365e1435c99a3bece3bc3cd18bfefead98522f36966f9c
font_01_sfnt_off0001127e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1127E 10356 bytes
SHA-256: 9fe5d13c11e9182a747aca95bd62dfb397bd509e4d68130a4fd111052bd2e4db

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