Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c177e74b296162…

MALICIOUS

PDF

78.2 KB Created: 2020-12-01 21:42:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 48e6a910ef16c9e7bd8c44e63c4cf4d9 SHA-1: da0e1b0b6f35977560e0c2f65b2bece487cebea3 SHA-256: 40c177e74b29616237c741ca8b0e52f3321457ec04c96789d755dec111b98004
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It contains embedded links, one of which points to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to a TV show recap to entice users to click the malicious link.

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
  • 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.
  • 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.
  • 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://traffking.ru/123?utm_term=the+vampire+diaries+season+8+episode+16+recap In PDF document text
    • https://zenunokiguwa.weebly.com/uploads/1/3/4/6/134614978/3bdd7d647.pdfIn PDF document text
    • https://gupovokezatiku.weebly.com/uploads/1/3/4/8/134878629/kaforikiselini.pdfIn PDF document text
    • https://kadamoxezegawuf.weebly.com/uploads/1/3/4/3/134347408/digemomi-pexilujat-wafixegarepodap-jisubobajizufom.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/pexoxuwek-vowugi-xekidiwe-rupavevurewem.pdfIn PDF document text
    • https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/lujigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469374/normal_5fb76014f039a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/foneniz/indian_banking_sector_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/6_22_pulgadas_a_centimetros.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/ginikeguripov.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/koropakewaxeno.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/nitrogen_and_their_compounds.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/poxobakitim.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE541 5396 bytes
SHA-256: 40919600247fd09c37a2b23bba5d4916d83ae634c5c9934a661079d3fa447373
font_01_sfnt_off0000f774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF774 11268 bytes
SHA-256: 525019ce31700ec19b2b5adc15af335724ab364161129c9ee35e8986cf76f9cf
font_02_sfnt_off00011daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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