Malicious PDF — malware analysis report

Static analysis result for SHA-256 569a46198e69aca3…

MALICIOUS

PDF

44.7 KB Created: 2020-10-29 20:06:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3151fcfdd44648cbc122791ec14be1ad SHA-1: d31337aca58c5ef6b511d9f0572bfc8a665bf3da SHA-256: 569a46198e69aca371683feabf23392e067ce544974424fa94575202c189c1fb
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://gettraff.ru/strik?keyword=delorme+ag+009871+201+inreach+se In PDF document text
    • https://nigokozop.weebly.com/uploads/1/3/4/4/134436215/5891692.pdfIn PDF document text
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/gesobogajobebuw_rogululuwi_bufojewe.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/469896.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f875c0d8dbf1.pdfIn PDF document text
    • https://vozupixog.weebly.com/uploads/1/3/4/3/134312338/141ec51dc612b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388841/normal_5f94976538b7d.pdfIn PDF document text
    • https://liziruji.weebly.com/uploads/1/3/4/3/134380663/burozogurewara.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f8c95a3855c4.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/4661563.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/7901005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409405/normal_5f963ee1e9484.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/1/0502/7073/2456/files/facebook_lite_handler_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c99a89d-c616-4524-96cc-4784cd3eac74/41725323801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2196ca25-a7d3-4ab3-affc-83940fad64b0/vukat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5054/8390/files/35384233772.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D34 5968 bytes
SHA-256: 5f27b6efc7815d479702ff89e707cfb79334ce266582147441094cd808e9aaaf
font_01_sfnt_off00008165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8165 10644 bytes
SHA-256: b1292f4a8ec4d65bf6a1580432a3119b4194593b8e323b971337f2fb3fc08f3e

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