Malicious PDF — malware analysis report

Static analysis result for SHA-256 9216a435c7d29984…

MALICIOUS

PDF

79.4 KB Created: 2021-03-24 19:48:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aa6150423a4415a495d6c46116f82fe9 SHA-1: 59a46a0fced1275efa9c42aa38ac6e9f351a59a5 SHA-256: 9216a435c7d299842b566ba99560ce6a4ffe0e02ba318c6a5ae75334fc6afcc4
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 0.9997

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://maypoin.ru/wix?keyword=delonghi+space+heater.+model+ew7507ebl+manual PDF link annotation
    • https://larunigilusevim.weebly.com/uploads/1/3/5/3/135320243/deguliwinejofa_mopozojeli.pdfIn PDF document text
    • http://degimogug.mypressonline.com/bekatelarewitupipon.pdfIn PDF document text
    • http://wide-mean.top/how_to_open_microsoft_access_database_engine_2010al2hk.pdfIn PDF document text
    • http://ketadiets.site/2356517312288nox.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/dovavadi.pdfIn PDF document text
    • https://xefezabegeritaj.weebly.com/uploads/1/3/1/3/131379478/bezesokuwisuw-giweziw-suzurukif-rebofadero.pdfIn PDF document text
    • http://citruss.space/xidisasep26vo.pdfIn PDF document text
    • http://mebotus.mypressonline.com/landscape_archaeology_book.pdfIn PDF document text
    • https://bumozirejukije.weebly.com/uploads/1/3/5/3/135340746/f5f8cb8823df544.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/jafawixixopegapibefikejuv.pdfIn PDF document text
    • http://bighome.space/dupimulawezorono8bdsl.pdfIn PDF document text
    • http://trenketo.buzz/bayesian_data_analysis_gelmanu5suf.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/jolozidabi/64542349935.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/fifa_16_android_internetlimi.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/reruji.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/2012_toyota_highlander_limited_v6_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/black_desert_mobile_giant_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/5231913466.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/fidulat.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/interpreting_apocalyptic_literature.pdfIn PDF document text
    • http://bemabam.myartsonline.com/32021633593.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/garmin_forerunner_310xt_strap.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_off0000f4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B4 6096 bytes
SHA-256: df9ae838c28080b00e59f0b36a8561d6c7b49f7c3a5df86816f48c9b368d3b52
font_01_sfnt_off00010967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10967 10792 bytes
SHA-256: d1cbd7b50efe3dc8d8840462d99ccb8bbf3766fd42101270d91632be4accd691

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