Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea5fc0b155e5883…

MALICIOUS

PDF

76.2 KB Created: 2021-03-10 04:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d8260aac053295771686372b74875921 SHA-1: e7b5d0758fe4f4ebe12b1e890787657f60897022 SHA-256: 4ea5fc0b155e58837bf8c09d00d862d1bdb77502fe422248e8e9ddfc20359e6e
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://maypoin.ru/strik?utm_term=lord+i+need+you+right+now+lyrics PDF link annotation
    • http://sibatike.getenjoyment.net/delirium_lauren_oliver_film_streaming.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459174/normal_60463848a5a13.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/84186579939.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/94978399216.pdfIn PDF document text
    • https://jaroxifapo.weebly.com/uploads/1/3/1/6/131636664/pimep.pdfIn PDF document text
    • https://rixemeja.weebly.com/uploads/1/3/4/7/134711448/5332343.pdfIn PDF document text
    • https://ponuwusareti.weebly.com/uploads/1/3/1/6/131636782/zejalevur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445739/normal_601d9338d2d04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411483/normal_6034a1d835c00.pdfIn PDF document text
    • https://nedixizudunosil.weebly.com/uploads/1/3/1/4/131483200/e0ca39a127f4.pdfIn PDF document text
    • https://tiforunu.weebly.com/uploads/1/3/1/4/131437018/3842506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454426/normal_5fd73c11bd9af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481520/normal_5fd0ec9d8967b.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/bokexizometun/aha_2018_guidelines_cholesterol.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/36386927427.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0db398e-68a7-4ef2-a82e-72b4deba9533/how_to_pair_x1_remote_with_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/trust_deed_format_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d90bba9e-486c-40fb-86c6-3fe967350124/how_do_i_get_into_my_google_cloud_account.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/lipid_lowering_drugs.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/21164981744.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/that_evening_sun_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/72074405580.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_off0000ebc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC7 5124 bytes
SHA-256: abd12778e0fa0274ee488b3fc8e6790b86d3028a4b75c6532df6b68612508d59
font_01_sfnt_off0000fd50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD50 11104 bytes
SHA-256: 3defd8d114085cd954ef23aa091b93907682895fa702fee7b1c19f3986962c87

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