Malicious PDF — malware analysis report

Static analysis result for SHA-256 2203c1e32bdbefcf…

MALICIOUS

PDF

34.1 KB Created: 2020-11-01 07:50:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 234ec698631b36d71dd3584d01b1114f SHA-1: b8bca3bbc7948ef0a7426f5c365f55a359dc8a8f SHA-256: 2203c1e32bdbefcf5ed1d4df0c61de4e5f6f8a11329bd2e67f776d26d8d90d81
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a link that redirects to known malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The 'SE_BRAND_CREDENTIAL_PHISH' heuristic indicates a brand impersonation lure, specifically targeting Costco. The ML classifier also flagged this PDF with high confidence. The embedded URLs and the document's structure suggest it's intended to trick users into visiting a malicious site, likely for credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/dozafawegikuxoto.pdf.
  • 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://gettraff.ru/123?keyword=physics+chapter+2+practice+test In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374002/normal_5f897a852ac75.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/dozafawegikuxoto.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/luwowux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368759/normal_5f8a51c273e7b.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/vexeliku/bolutovalenejozawezut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8068/8838/files/jakevirulelazikunesupepa.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/english-_russian_dictionary_with_spoken_pronunciation.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/magumuxozakiwutibutojuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/48323917667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cadbd7b4-5fbd-4378-8778-192b68ba07dc/wotatolaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9733/2151/files/63846774788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2be302a9-c922-43a0-8376-d5ff6a5e76ef/lusoramafamumufixurelino.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/ash_blonde_highlights_on_black_hair.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1088/2716/files/caddo_lake_tour_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/zidajijesefalubunur.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/lukatavapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3129/3863/files/39078128909.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_off000048cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48CF 5224 bytes
SHA-256: da99615a6cad1f945301b1cd43710e634fe8a29bf2dc9cefb3020d0264dbff3e
font_01_sfnt_off00005a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A99 9672 bytes
SHA-256: e28f3b262f7692b396a4b7b153482b6ee4565877092b101d3dbcf0d834423262

Open this report in the interactive analyzer, or submit your own file for analysis.