Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe047c1b78a561b7…

MALICIOUS

PDF

71.7 KB Created: 2021-06-02 06:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e7dedcdf62636f9a405cbbed546bd94a SHA-1: e7938fd4ee6690a0e704042dc9d9436324b27f9b SHA-256: fe047c1b78a561b790c04abe3c44a068029912173db6304c6e1820ea923487b0
156 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 0.9996

Heuristics 5

  • 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.
  • 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://philabc.ru/pbw?utm_term=career+paths+in+psychology+robert+sternberg+pdf PDF link annotation
    • https://femomupine.weebly.com/uploads/1/3/4/4/134458898/jaweral_fuzomejadimeki_zokukuwod_lavelumuzeg.pdfIn PDF document text
    • https://jufujepil.weebly.com/uploads/1/3/4/6/134650130/tefusu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451949/normal_60353931b85c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389358/normal_604174f392c62.pdfIn PDF document text
    • https://nugasoxitobaj.weebly.com/uploads/1/3/2/7/132710773/nuxuleb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383147/normal_605ac33a272e8.pdfIn PDF document text
    • https://vewudati.weebly.com/uploads/1/3/0/8/130873955/radujinufavapag-wetisiw-mutef-sanirelalikot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458132/normal_6041e3d3b7c74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379045/normal_5fefd232db257.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413696/normal_6030eb5e4a7e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530457/normal_6024834091157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_6011dc5d0728c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447108/normal_5fe9bb5550d6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463543/normal_6041e536cd28b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485696/normal_602e4a3b3bbb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/876c3ecb-7f5d-4609-b561-4bf8247dee64/briggs_and_stratton_20hp_intek_engine_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f03bb343-cfe3-4698-92cd-5ecb532739b2/51281154305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f87d5b8-583b-406c-bcf4-6f57d72f9428/the_hound_of_the_baskervilles_english_subtitles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25eef3d4-69e7-4b09-ba48-e05cf9b10c02/tituxujofisizizena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fec1e3e4-898d-4463-af7f-d2a2d56f60b2/what_is_llb_law_all_about.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b542337-1bcf-4c22-b982-e04a44e95bcd/54986970012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f73d1a4-83b7-4735-b9a6-7482d3eb0c6e/55717485069.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_off0000db68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB68 5564 bytes
SHA-256: 087b36fabc4ddad562ef35a2edc2e888345cfbf4c6e933a3e4a9701e2c58cf95
font_01_sfnt_off0000ee4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4A 10212 bytes
SHA-256: 4dce5f5a050f2478740106ac16a4198a5ed55e21cf9a67732de20a2053a51afb

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