Malicious PDF — malware analysis report

Static analysis result for SHA-256 347e833f3bb48315…

MALICIOUS

PDF

75.8 KB Created: 2021-03-16 16:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 287f27fbd62a191b0410418b41aa7c00 SHA-1: 932351a173eb76434cfa751aeb14fba165e6daca SHA-256: 347e833f3bb48315c88ff69e438fd42e93367bfc3896b40513e8408819178b81
156 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 0.9993

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://pelibifir.ru/wix?keyword=clinique+repairwear+intensive+eye+cream PDF link annotation
    • https://paweweribawu.weebly.com/uploads/1/3/4/6/134656346/patofa_wotigu_mipirux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_604f357b91698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454665/normal_5fe9ce0a9bb3b.pdfIn PDF document text
    • http://lejunuzegakikuv.mypressonline.com/thanksgiving_bingo_printable.pdfIn PDF document text
    • http://monubagujizud.mywebcommunity.org/aprendizaje_visual_auditivo_y_kinestesico.pdfIn PDF document text
    • https://kexinebig.weebly.com/uploads/1/3/4/3/134338338/povosololej_vadevidij_dojipakadajog.pdfIn PDF document text
    • https://xapugugividus.weebly.com/uploads/1/3/5/2/135298581/3b1a651bc.pdfIn PDF document text
    • https://xosulokut.weebly.com/uploads/1/3/4/4/134466674/5c59d50fa4c1.pdfIn PDF document text
    • http://bimizuzi.sportsontheweb.net/69798793292.pdfIn PDF document text
    • https://donabetolemi.weebly.com/uploads/1/3/1/6/131637402/wivupupu-fofezusov-miterirogiviz.pdfIn PDF document text
    • http://fopokigife.mywebcommunity.org/how_to_clean_voldyne_5000.pdfIn PDF document text
    • https://xopapirepukonut.weebly.com/uploads/1/3/6/0/136053795/65365c153f2.pdfIn PDF document text
    • https://mopomavimixefor.weebly.com/uploads/1/3/1/1/131164117/pazidibo.pdfIn PDF document text
    • https://rawowoxok.weebly.com/uploads/1/3/4/3/134309987/ec2ee55.pdfIn PDF document text
    • http://pasiworuwiwoz.getenjoyment.net/28393940479.pdfIn PDF document text
    • https://baboromet.weebly.com/uploads/1/3/1/6/131606353/7436572.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9faa736-d3c8-4340-998f-aee3555a9117/chrono_trigger_remake_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/border_song_video_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/78910698896.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/gig_guide_manila.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/crystal_report_filehippo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62748892-0bfd-40be-bf6e-6884058ea62c/kevuviguninopu.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/37206765921.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE909 5364 bytes
SHA-256: 40873b0aa34123a69efec2aa63750fb0a01f155a1957029dfae309afe37efe5e
font_01_sfnt_off0000fb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4E 11236 bytes
SHA-256: 1d5fc0e9bd5a5ae5f54d5cc74b157e8e9251e83967c0d247f0b427b7397a7197

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