Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ccdbedb20cff781…

MALICIOUS

PDF

66.5 KB Created: 2021-04-11 02:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a871824744499c6438a940e7ee741b7e SHA-1: c3d848e4ffc8af5b96b7ad9c428a0005477a9b94 SHA-256: 5ccdbedb20cff7819d50bdc1e298d62aa83897044b7aac9075842b863b578259
154 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 0.7003

Heuristics 4

  • 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
  • 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://xajibur.ru/strik?utm_term=how+to+check+my+citation+online PDF link annotation
    • https://wigowuwadapol.weebly.com/uploads/1/3/5/3/135315864/nigar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505102/normal_5fdf939e101ca.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/kemugobajoroxutepoxe.pdfIn PDF document text
    • http://lezofifividex.scienceontheweb.net/diraze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483072/normal_5fd8725129418.pdfIn PDF document text
    • http://kukushpa.fun/flight_icon_pack_persona_59ynrl.pdfIn PDF document text
    • https://biwawidojimu.weebly.com/uploads/1/3/4/6/134648839/sajoguzewuvida-saxewimus.pdfIn PDF document text
    • https://rixowumunek.weebly.com/uploads/1/3/5/3/135330445/vewafig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385412/normal_5ffac6e514821.pdfIn PDF document text
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/fec512.pdfIn PDF document text
    • http://levelupguild.com/agua_de_limon_modelo_corpuscular_deadu7e.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/xaxejebebosajefedolepasam.pdfIn PDF document text
    • https://xupumoga.weebly.com/uploads/1/3/1/1/131164417/koseg-lulazemot.pdfIn PDF document text
    • http://jonebukusopovet.mygamesonline.org/25598186429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462035/normal_602c684b6fed9.pdfIn PDF document text
    • https://razolonupul.weebly.com/uploads/1/3/4/8/134888498/miridetegoxoti.pdfIn PDF document text
    • https://puvugopusu.weebly.com/uploads/1/3/2/7/132711965/kipijovunakiwiv.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/devuxuzejozam/putobufatuv.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/kidifumakaroji.pdfIn PDF document text
    • http://moxixezegosa.onlinewebshop.net/learn_english_with_tv_series_friends.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/25692474.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/articles_of_confederation_weaknesses_political_cartoon.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/dead_silence_movie_mp4_free.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 4984 bytes
SHA-256: 64f976762c5b1146ed29c0fcfd8f916434d5cb24764b50011938627c83ce6f80

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