Malicious PDF — malware analysis report

Static analysis result for SHA-256 9922f96be310885a…

MALICIOUS

PDF

81.9 KB Created: 2020-12-03 10:01:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 66f5b7187aa4afbb68e27e70712ae5e0 SHA-1: d25c85fd524a60b1d1f15007050baff24be2e1f0 SHA-256: 9922f96be310885a6631f745e18454e7591869153169ca712f5697f478c80524
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/strik?utm_term=la+ciudad+de+dios+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387033/normal_5f8dd5bf29cd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426279/normal_5fc1dbfd1b5bd.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/1bc331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481422/normal_5fbb932a1971c.pdfIn PDF document text
    • https://maxuvejalova.weebly.com/uploads/1/3/4/2/134265339/fibazife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5f9a7887173c0.pdfIn PDF document text
    • https://lovarewido.weebly.com/uploads/1/3/4/3/134322716/novovinam_kolugatupedobe.pdfIn PDF document text
    • https://taxufutusa.weebly.com/uploads/1/3/4/5/134514166/bebivifixulurowiwaz.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/1985245.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481065/normal_5fc8438f3c774.pdfIn PDF document text
    • https://zesukixugedun.weebly.com/uploads/1/3/4/5/134593530/46dd01f77da6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469623/normal_5faa63dd42644.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://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd234477802d38de33c6a6/1606230852522/casio_gw-500a_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d49a16f6d44b07be6b5d/t/5fc11195145a8629dcd6ba88/1606488470771/trb_2020_paper_format.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc32e547848ba205d276709/t/5fc4dadecb3e0f5771e80603/1606736607482/maddox_colonial_reproductions_secretary.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffbf92e34347c703edab4/t/5fc21eeee18c5c478e43d797/1606557422583/66341513963.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF732 4652 bytes
SHA-256: 3d41fe625332cb8475df242c7efe1b7594aa9d23d0502b655d2c00999c9cd380
font_01_sfnt_off00010702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10702 11148 bytes
SHA-256: 29ee40eaabd89925b86f86614879207e4460935f8d4899ca2acd01a15ca77ad4
font_02_sfnt_off00012b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B71 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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