Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25709c2ce2335f9…

MALICIOUS

PDF

67.5 KB Created: 2020-12-20 22:45:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0483a5e8925890befec9ece82bfa4030 SHA-1: bef8fb1e86766e13df8ab99193a585a0722effde SHA-256: e25709c2ce2335f941a566104773aba160778f681be6cd86a26028179fba6c07
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic flagging it as a link farm. One of the primary URLs, 'https://traffnew.ru/strik?utm_term=scrapbookpal+coupon+code+2019', is identified as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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://traffnew.ru/strik?utm_term=scrapbookpal+coupon+code+2019 PDF link annotation
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/810868.pdfIn PDF document text
    • https://zoximubovug.weebly.com/uploads/1/3/1/3/131379564/f85f1ead4b.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/jakadomabutot_limufawidivaw_zalowabi_dubukikowavoti.pdfIn PDF document text
    • https://letenusesek.weebly.com/uploads/1/3/4/3/134310332/kobefixubud.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/vivutakot-bixevud-rodejalumovev-difizivotogokub.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/fokapikow/doxijujeteti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaa75531-73c8-4f83-8a6b-ea0d4e531c29/fiver_watership_down_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a341be-1e13-4072-b3fa-8c4cde151a05/jifewasitivipo.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/debuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/444dccaf-3b24-4ad1-8d78-97a422185ca2/5668288607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed2179d-fe8d-4872-b573-60deda423f56/kuxewetifobaroxusejebaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13f6d912-a89e-4ebf-b07d-6c05568f62bd/icd_10_for_enlarged_thyroid.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_off0000ccb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB0 5680 bytes
SHA-256: 6109aa2e06462114ccb8b1b3add1a8abddf5ab9e0044138326ed21e88d46a8c3
font_01_sfnt_off0000e00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00A 9728 bytes
SHA-256: afa341f6580a80ca2f36fad7d1f2b577da3a5ae7a089bda85112cec8fab3ea28

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