Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a089687ac4e3cd…

MALICIOUS

PDF

80.2 KB Created: 2020-12-10 21:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 12ddfcdc770a1900f4fe8155aff7a24b SHA-1: d9460d9c8b874134380b20ff82b436b222668c7d SHA-256: 24a089687ac4e3cddbe0a85abbd7e17c3b1e414496b36158eea62407b453821a
214 Risk Score

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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gettraff.ru/123?utm_term=black+female+ufc+fighters In PDF document text
    • https://deserekinubolid.weebly.com/uploads/1/3/4/3/134319780/dagisa_gofijosasan_zesimodajude.pdfIn PDF document text
    • https://besogedawifajop.weebly.com/uploads/1/3/4/2/134234635/b6315b48a8.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/2cbba0.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc3426faffbf90a66f9ae2f/t/5fc616d461e25426e1083f71/1606817492843/rukezogavilinexoronib.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed4f1452f90b7fe57e24/t/5fc566084e98326c02c6f4f8/1606772232890/please_define_self-assurance.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/negen.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/time_zones_list_by_country.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b7a7c14dfd36fe127655/t/5fc63b643570fb44d1d6e1df/1606826855372/sexotebemadufixuvakaki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b09f382bec7399f90fc2/t/5fd11146dcf0f943ffb08f75/1607536967561/cards_mobile_wallet_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6dc5af140fc3aa585ee93/t/5fced3d355629615614135ae/1607390167334/figadugunifiloxigifi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4deb9f7cf8c7540443e1f/t/5fc5de0b3f75b166439f5c21/1606802960046/minecraft_underground_biomes_1.14.4.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc699d1e2fce462bcb38289/t/5fc8810db74dd54858dafa6e/1606975758345/minecraft_username_generator_not_taken.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://www.gnu.org/licenses/gpl.htmlIn 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
stream_003_off0000e3da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE3DA 14900 bytes
SHA-256: fd2592e9810fb5d6bc783e7d69204e214c006bc58dec00eed5ff443dab484762
font_00_sfnt_off0000d19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19F 5408 bytes
SHA-256: dce8d1d8c908cb05e57586dc5a5292989587ab474811f249787598cccc098915
font_02_sfnt_off00010ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDD 11456 bytes
SHA-256: e3a6816e4ead2aefb1ff0f6d8ed4cba5772a8a6134292427b9d44c3ad262d45f

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