Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c587da0b7fc612f…

MALICIOUS

PDF

81.4 KB Created: 2021-05-08 05:51:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 144e51216ed8d03771abba28ff69c66b SHA-1: 2c4b7396fb72ad394c4075ee81e2f1405ee11d47 SHA-256: 1c587da0b7fc612fbeb3a255a83638864c714859bbbb0f342b1ad0bbd3eb6532
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or SEO link farm attack. It contains numerous external links, with one pointing to a URL that appears to be part of a phishing or malware distribution scheme. The document body is heavily obfuscated and truncated, preventing a detailed analysis of its specific content or embedded scripts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=how+to+disassemble+a+whirlpool+duet+washer
    • https://cdn-cms.f-static.net/uploads/4459177/normal_5fda42c91a9bb.pdf
    • http://linoveda.22web.org/varuxejozarojan.pdf
    • https://bufetokarad.weebly.com/uploads/1/3/4/0/134096279/46965165c97.pdf
    • https://static.s123-cdn-static.com/uploads/4426974/normal_5fcbd76a46d43.pdf
    • https://setixifofu.weebly.com/uploads/1/3/1/6/131606861/joweguxozimu_ponubuf.pdf
    • https://cdn-cms.f-static.net/uploads/4411709/normal_601b395d52f36.pdf
    • https://furivupes.weebly.com/uploads/1/3/5/2/135295821/59e1626b.pdf
    • http://mofopafilubo.22web.org/36040091458.pdf
    • https://menufaron.weebly.com/uploads/1/3/0/7/130775522/xotekimesi_jefixabisege.pdf
    • https://cdn-cms.f-static.net/uploads/4476421/normal_600bd71e5379e.pdf
    • https://powadurax.weebly.com/uploads/1/3/4/6/134621507/bbf4aafffaf59.pdf
    • https://xirazaju.weebly.com/uploads/1/3/4/8/134859293/digaluwubu-wunadanunew.pdf
    • http://lulezuzebat.22web.org/gcaar_sales_contract.pdf
    • https://cdn-cms.f-static.net/uploads/4471959/normal_60171b9ed02a3.pdf
    • https://digaporabanezaf.weebly.com/uploads/1/3/4/6/134689005/7ef22479a0.pdf
    • https://lotefexikig.weebly.com/uploads/1/3/4/0/134097130/kabonegalu.pdf
    • https://cdn-cms.f-static.net/uploads/4465564/normal_6015537179e12.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/feliso/22865092986.pdf
    • https://s3.amazonaws.com/dofufiri/bdd_full_form_urban_dictionary.pdf
    • https://s3.amazonaws.com/betefowubevat/chameli_ki_shaadi_movie_hd.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fee5.bin
a10dd57909c026b6bbf1972671c8603ff8b1c383eb7cbe5d6f410213171d49e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE5 5392 bytes
font_01_sfnt_off0001110e.bin
6e1cb39d69bc3673ec2237f2e6b3e526ec6e9cb3b61dda516afc2872eaf5aff3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1110E 11608 bytes

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