Malicious PDF — malware analysis report

Static analysis result for SHA-256 faedfbef0037f3ea…

MALICIOUS

PDF

96.6 KB Created: 2021-03-19 09:45:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 8b80e920b26d9645753cf3d7d9328ee3 SHA-1: 665dc46a01079c51f4f79c278bf28d85eb8406ed SHA-256: faedfbef0037f3ea6c4048c3b7652cb2c53e67ace5d22ca8e96f92899454c67e
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which appear to be SEO-optimized to lure unsuspecting users. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, suggesting an attempt to drive traffic to potentially malicious sites. The ClamAV detection and ML classifier further support the malicious nature of the file, indicating it is likely a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/award?keyword=sustainable+livestock+farming+pdf PDF link annotation
    • https://cdn.sqhk.co/gujuvizaja/jdgh1gj/undertale_amino_pc_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415754/normal_604ba00518460.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387825/normal_601fe3800b744.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxatotukaru/7XjgieX/errors_in_the_quran_answering_islam.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://s3.amazonaws.com/rokuwapesu/the_awakening_kate_chopin_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/58053853593.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/solve_polynomial_equations.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/is_triage_a_french_word.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/autobot_arcee_transformer.pdfIn PDF document text
    • https://3d7304b5-8527-495f-b913-615d6f357a43.filesusr.com/ugd/ef7486_a79ae2a4aa264045802163fc1420bcb5.pdf?index=trueIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_9331db22bac641d4ae5c0cd6dd7f9632.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/mammoth_california_snow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/xegoxetujolewuselatebo.pdfIn PDF document text
    • https://c31d65df-273c-4bcc-acfb-7b03b0724b99.filesusr.com/ugd/e7e4a0_408185bf94a4471e8f6e295d4e6aac0a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/tematitegoj.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/timamulijulekawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36eae5ac-dcff-420f-8452-2f32a462d552/xusigerera.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/xirefuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d147630-a874-4889-a598-31a97856c90e/27915791163.pdfIn PDF document text
    • https://f3dc8d0a-397f-4303-99a5-a7927e83d850.filesusr.com/ugd/e916cf_f14dca7a055d4c338e8956913df62682.pdf?index=trueIn 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_off00012bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC1 5724 bytes
SHA-256: 88d8e3fe5fb59e57a84860e6d072e95ee87bf3da98afed1240a5b0f1b0033691
font_01_sfnt_off00013f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F1B 11676 bytes
SHA-256: 83c5e0fcfa0a8a5cd7c55dff0d65308fb876b8bb1d867bc4d17ba76744501953
font_02_sfnt_off000166ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166AC 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

Open this report in the interactive analyzer, or submit your own file for analysis.