Malicious PDF — malware analysis report

Static analysis result for SHA-256 526a50c32774c20a…

MALICIOUS

PDF

75.5 KB Created: 2021-02-17 15:46:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 629ba35e536fd621abde5a109e715649 SHA-1: eb8f3f3d1529d0b91278d0a3f2cabd94f077124e SHA-256: 526a50c32774c20a2c878092d76c5679abfa3574b575282de4db30d3b4944d95
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or redirection scheme to host malicious content. The document body, though heavily obfuscated, appears to contain metadata related to search terms and PDF generation, further supporting the lure of a search result. The presence of numerous external URLs points towards an attempt to redirect the user to potentially malicious sites.

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://jottigo.ru/wix?keyword=wickford+middle+school+cross+country PDF link annotation
    • https://cdn.sqhk.co/xavaxonad/dGfyfij/8441640144.pdfIn PDF document text
    • https://sojenakituvewo.weebly.com/uploads/1/3/3/9/133986345/08ed365.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/basakipupoguluxija.pdfIn PDF document text
    • http://copriyghtconfirmed.com/86117384230ptgzx.pdfIn PDF document text
    • http://gonzo-3d.com/runokinorosezufomuwojn0gep.pdfIn PDF document text
    • https://xiliperudal.weebly.com/uploads/1/3/3/9/133999468/dupab_tasuzejafaka.pdfIn PDF document text
    • https://sumomaduge.weebly.com/uploads/1/3/4/8/134884200/zajulabidoduremet.pdfIn PDF document text
    • https://susatabunek.weebly.com/uploads/1/3/2/6/132695662/xosokedezexam_dodujuzinifes.pdfIn PDF document text
    • https://cdn.sqhk.co/wefenosefob/idjgyHb/wulijasuvodamef.pdfIn PDF document text
    • https://cdn.sqhk.co/taduzotul/hQtmhhB/friendler_find_new_friends_app.pdfIn PDF document text
    • https://dupukaradox.weebly.com/uploads/1/3/6/0/136015529/2168894.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/iUovxgi/8904789319.pdfIn PDF document text
    • https://jesiwiluvilad.weebly.com/uploads/1/3/1/8/131857580/1120588.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/pujinit/changi_airport_map_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/wibobiwiwuwilubezexo.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/puturaped.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/joguxidanunulekevobod.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/92027390008.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/nutufavi.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_off0000e8f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F5 5232 bytes
SHA-256: 6d9ef9349ab2c373f8478dda8e8dc42a145dc1c22a5f687d8555e936b35b0a02
font_01_sfnt_off0000fab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB1 11180 bytes
SHA-256: 6f688e4d32ab42283be1953ab3626f62a0194f2e934fadee161e735b733bedeb

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