Malicious PDF — malware analysis report

Static analysis result for SHA-256 49993e9b2682973f…

MALICIOUS

PDF

75.8 KB Created: 2021-03-21 11:44:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 37152cdeffd17c9732db10944dcabf44 SHA-1: 9c44f24d4ebfad954186859f61d4c6240202df08 SHA-256: 49993e9b2682973f69917872a8e92736614716732e60898d522be43ba819ec3c
156 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. 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
  • 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=definition+of+pharmaceutical+analysis+pdf PDF link annotation
    • https://zomuguzilax.weebly.com/uploads/1/3/5/3/135327960/binutiza.pdfIn PDF document text
    • https://zajebujop.weebly.com/uploads/1/3/4/9/134902249/3835992.pdfIn PDF document text
    • https://fagowegegex.weebly.com/uploads/1/3/5/3/135315381/kovipurinuzazinuga.pdfIn PDF document text
    • https://komimuvupelogi.weebly.com/uploads/1/3/4/3/134312664/biribebidamon.pdfIn PDF document text
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/c3d004.pdfIn PDF document text
    • https://vazagivire.weebly.com/uploads/1/3/4/8/134874695/8730336.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/82279975112.pdfIn PDF document text
    • https://bafikesixetiv.weebly.com/uploads/1/3/4/5/134506736/2361666.pdfIn PDF document text
    • https://tulopesonu.weebly.com/uploads/1/3/5/3/135318186/bomoleki.pdfIn PDF document text
    • http://valigulepi.scienceontheweb.net/farapategejiw.pdfIn PDF document text
    • https://jamibada.weebly.com/uploads/1/3/1/1/131164428/rujagixenuwun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/aircraft_performance_class_1.pdfIn PDF document text
    • http://zopimejumujodeb.rf.gd/list_of_asian_countries_with_capital_and_currency.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/what_are_good_bible_study_topics_for_youth.pdfIn PDF document text
    • https://68f06c25-eb64-4e0a-94e3-a0e33e610147.filesusr.com/ugd/463ace_da3d6f0302ad42bf9ad1534687480c94.pdf?index=trueIn PDF document text
    • http://kedeminajuzo.epizy.com/25555999951.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/powerpoint_template_resume_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/biomass_power_plant_process.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/vofemebetokagutarolupel.pdfIn PDF document text
    • https://e46eb8ae-11b5-47af-91b5-79e2db369635.filesusr.com/ugd/f84671_ddc664bdc76e47b488622cd195799f1a.pdf?index=trueIn PDF document text
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_a31f9eed7f9e43c987a4d086aa36ced2.pdf?index=trueIn PDF document text
    • http://resifidivef.epizy.com/arithmetic_coding_example.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_off0000ec0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0D 5496 bytes
SHA-256: 93810d535ee62b83fc98a4db1ed5f5a5847e25a79a6afc3fae107accb846f0ee
font_01_sfnt_off0000fea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA3 10384 bytes
SHA-256: e3442924f8fa6a7ed9dd4f03b002d6d17b4151e3676ba621e960f164a38cdf76

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