Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6e57e9c166a61e…

MALICIOUS

PDF

81.3 KB Created: 2021-09-12 20:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 2d72b86be7aa84f034b8c6f433ab93db SHA-1: 49b1ac7baec6e5306e0a0a945285c87e92ba4d2a SHA-256: 1f6e57e9c166a61edd67760eebe818866c7fbb9aa9d1ae44eea045cf95615657
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links, likely leading to phishing sites or malware downloads. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://foodexgida.com/uploads/files/tofovizoxajufode.pdf In PDF document text
    • http://ues-rb.ru/themes/ues-rb.ru/files/jopitugok.pdfIn PDF document text
    • http://tnhmc.com/userfiles/file/65022974422.pdfIn PDF document text
    • http://onlinepravenconsultant.com/uploads/wysiwyg/files/58397120292.pdfIn PDF document text
    • https://giant-nano.com/app/webroot/userfiles/files/45971225459.pdfIn PDF document text
    • https://asiquim.com/ckfinder/userfiles/files/mokurexarop.pdfIn PDF document text
    • http://holland-ex.com/images/blog/file/vuvowuzufudu.pdfIn PDF document text
    • https://capital-publishing.com/ckfinder/userfiles/files/43024491750.pdfIn PDF document text
    • http://dieterheich.de/images/uploads/file/babakodegene.pdfIn PDF document text
    • http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/jizonu.pdfIn PDF document text
    • http://phukhoabacninh.com/images/files/kilajebodu.pdfIn PDF document text
    • https://partroyfuneralhome.com/partroy/assets/file/33939487638.pdfIn PDF document text
    • https://ndmoyun.com/calisma2/files/uploads/48917367210.pdfIn PDF document text
    • http://think6.net/ckfinder/userfiles/files/20210907120809.pdfIn PDF document text
    • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/kajorexemagejaj.pdfIn PDF document text
    • https://koratspring.com/upload/file/likumesizo.pdfIn PDF document text
    • http://jshanwoo.com/ckfinder/userfiles/files/19206807604.pdfIn PDF document text
    • http://penzionnakrizankach.cz/ckfinder/userfiles/files/woxilesajovokebaziz.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/files/36895669672.pdfIn PDF document text
    • http://01host.ru/userfiles/files/bobixizosowubusasugonib.pdfIn PDF document text
    • http://wellogo.in/userfiles/file///6097830394.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=mobile+sms+apkPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/posiwebugevesupi.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC60 10336 bytes
SHA-256: 15427f5c644574c4d8cc266550ddb97de8f713946449a43635db55780216ff93
font_01_sfnt_off0000f374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF374 17252 bytes
SHA-256: 9afb327cee2855b9b718c0334aa445e10b85612f8240d35bfe5477aeb5cb404a
font_02_sfnt_off00012026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12026 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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