Malicious PDF — malware analysis report

Static analysis result for SHA-256 d064e12e7d7270ad…

MALICIOUS

PDF

66.4 KB Created: 2020-11-02 14:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 098712ba8da201f8574e4c36e223aedd SHA-1: 92244dd0a0f57a5952eee865eddbf2dc472636da SHA-256: d064e12e7d7270ad1ec9a83288f04ed06e3ce627525358fa98b6f12bf1cd9daa
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.ru/123?keyword=gun+script+for+roblox+exploit In PDF document text
    • https://nusosujorogu.weebly.com/uploads/1/3/4/5/134589145/1644869.pdfIn PDF document text
    • https://zamizugupaf.weebly.com/uploads/1/3/3/9/133999186/670966.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/ripoxijalenigel_milutak.pdfIn PDF document text
    • https://ligavovifoma.weebly.com/uploads/1/3/4/5/134522072/gepuv.pdfIn PDF document text
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/c6e0a0386a15c26.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://nabolonoroxene.weebly.com/uploads/1/3/4/3/134373159/6795506.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9279/3757/files/sticker_in_whatsapp_android_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3789d40b-7c81-4d5d-b10f-699c9b5633a2/xamuzezovoduliwupovaxajas.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/nunijumabudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6776/6453/files/the_long_dark_supply_cache_broken_railroad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b18c9ca-7636-4d5e-a405-794f951183bc/kililemisozadekifibakolib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/kuvujafoxejumed.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB851 4920 bytes
SHA-256: 0d8e9f95aca15d3af0093a8206b8e04fc0433e7153821aa480f0c7800cc5d5be
font_01_sfnt_off0000c922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC922 10932 bytes
SHA-256: ed6903a10a422101e4f2a8518a791f6f1190e8f2c63f17b71fcecc691fde4e3a
font_02_sfnt_off0000ee5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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