Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ccd150b96ac3a11…

MALICIOUS

PDF

73.5 KB Created: 2020-11-29 15:05:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 42d63f1232caa73ba2c296325ac03de9 SHA-1: 5fc16050e4e72aef8b714f2b12b083d85fda26e5 SHA-256: 2ccd150b96ac3a1144b7dbf3f3ee0874b3d34af23ba41f3e61b73b13f10918dc
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains a large number of external links, likely intended to direct users to malicious websites for further exploitation or phishing. The embedded URL 'https://trafftec.ru/strik?utm_term=frequency+of+note+and+pvc+pipe+lengths' is a primary indicator of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/strik?utm_term=frequency+of+note+and+pvc+pipe+lengths PDF link annotation
    • https://tukowozurowogof.weebly.com/uploads/1/3/4/4/134440104/sutibopevugafezerud.pdfIn PDF document text
    • https://manukigobedor.weebly.com/uploads/1/3/4/4/134481395/f15ffe1a870.pdfIn PDF document text
    • https://misiwutikamiba.weebly.com/uploads/1/3/4/6/134601431/govegobipokumetoja.pdfIn PDF document text
    • https://talipugetajizan.weebly.com/uploads/1/3/4/8/134862074/wupuvojexefexon.pdfIn PDF document text
    • https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/toxikujazijagiwe.pdfIn PDF document text
    • https://judamuguduvawa.weebly.com/uploads/1/3/4/3/134352100/zijekepumesiza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385636/normal_5fb8c6a8b34de.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/dujepav/gosofiru.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/fapaxokemadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10641907-d966-4b24-904f-450ec0c1d740/54796522734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf79ff89-09bd-4d53-bda7-26c69e65ed5d/25134193531.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/what_is_muscle_tetanus.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/4313618585.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/24808654087.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/fefib.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/ronafakewufikinipugubola.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_off0000da55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA55 5660 bytes
SHA-256: 8ffda2d5fe456fbdb5e63ad6a616a8d138d795ca30272a6c6891f1b456ceef6d
font_01_sfnt_off0000ed9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9E 15584 bytes
SHA-256: bd4f81dc745b4739328bf08ed577125763fca2e06d97eb5f2ad3fd1c76715a5c

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