Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6bcde39dd27b749…

MALICIOUS

PDF

83.4 KB Created: 2020-12-14 11:22:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c0b625dc59bb34c3c034fb5603788316 SHA-1: d43b986ee4742fa01e42520b837b09312ec6836d SHA-256: f6bcde39dd27b7497d0ea435f7ffbad0005811977aa22733856ba11cdf15431b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The embedded URLs likely serve as lures to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffset.ru/wb?keyword=customary%20law%20in%20kenya%20pdf PDF link annotation
    • https://wazaxilam.weebly.com/uploads/1/3/4/7/134726650/ratumu.pdfIn PDF document text
    • https://wazajodowefode.weebly.com/uploads/1/3/4/0/134017502/mojivudubivunedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413227/normal_5fb6a9f736b50.pdfIn PDF document text
    • https://ralututoj.weebly.com/uploads/1/3/4/4/134457658/kifutimavofexagimof.pdfIn PDF document text
    • https://junadiger.weebly.com/uploads/1/3/4/6/134639337/2179532.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485822/normal_5fce87b3e334b.pdfIn PDF document text
    • https://nanagimub.weebly.com/uploads/1/3/4/6/134632235/5eaca50234b.pdfIn PDF document text
    • https://gakifesobilale.weebly.com/uploads/1/3/4/5/134512030/belex_zalizasalemod_dulufagaji_regadomarekemon.pdfIn PDF document text
    • https://buzijivugaza.weebly.com/uploads/1/3/4/7/134709386/4602493.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://uploads.strikinglycdn.com/files/3e68fcdd-b826-4dfe-9e8a-07cb01a415e6/degopazukodavukogedolob.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdef9a08bb286b7fcc1d74/t/5fce54175177ea328cf359db/1607357463446/tewitenevanibed.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe119f61e25426e100a725/1606291872060/i_will_let_your_heart_be_my_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fced45f9f4d5d21a5efcf3e/t/5fd032c151357b44bb88da79/1607480001284/lozunerapepanuwemodib.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3a46c8139af037656512a/t/5fc525f7f8cdb769c6889b6a/1606755832370/where_the_heart_is_book.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_off0000fb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9C 5352 bytes
SHA-256: 793520ae12beafcb5ed9e3795e6bf18afe5e248dd50bd2e86ff8b34aa66429a1
font_01_sfnt_off00010dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD3 10700 bytes
SHA-256: 03c71523a3dd8d0ecb4b2951c03e287d23d4230c1c70b10266cc4fcd8af04a80
font_02_sfnt_off00013248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13248 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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