Malicious PDF — malware analysis report

Static analysis result for SHA-256 439e5bc83bb65974…

MALICIOUS

PDF

37.2 KB Authoring application: PDFBox First seen: 2020-09-24
MD5: 7accf1809a73b99da1806a3fa860eebe SHA-1: 9c52016fc5e57a807c09227c7d1ab7580fef1b3c SHA-256: 439e5bc83bb6597441c48dceef90b2921a0714e4302c761fcae88ee92503ddc9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to external PDF files, masquerading as an 'Advanced life support provider manual'. This heuristic, combined with ML classification and ClamAV detection, strongly suggests a phishing or malware distribution campaign. Although no scripts were directly extracted, the embedded URLs are likely used to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 http://turlurs.com/uploads/1/3/0/5/130588773/2752789.pdf In PDF document text
    • http://bkhouse.services/uploads/1/3/0/4/130476539/7511142.pdfIn PDF document text
    • http://jodeedean.com/uploads/1/3/0/3/130323666/pakusopefoma.pdfIn PDF document text
    • http://moodage.net/uploads/1/3/0/5/130546645/f79044c406027c.pdfIn PDF document text
    • http://genacorpict.com/uploads/1/3/0/6/130620366/xidipizixajufasej.pdfIn PDF document text
    • http://baselandspice.com/uploads/1/3/0/2/130272440/3258385.pdfIn PDF document text
    • http://mishadumois.com/uploads/1/3/0/5/130541004/purefitelixal_jujurifitotuwo_pibasedidife_vabovokadof.pdfIn PDF document text
    • http://deedeemillbrae.com/uploads/1/3/0/7/130739232/vobetunefesofoxudi.pdfIn PDF document text
    • http://easyfootcare.com/uploads/1/3/0/4/130478602/vitosunuzipu.pdfIn PDF document text
    • http://thelandbetween.org/uploads/1/3/0/5/130551962/4864538.pdfIn PDF document text
    • http://cuberexpress.com/uploads/1/3/0/6/130604560/28f22e402e0a7f.pdfIn PDF document text
    • http://northamericancontinent.com/uploads/1/3/0/5/130589227/sapanajope.pdfIn PDF document text
    • http://1988ltb.com/uploads/1/3/0/6/130620492/wenaxek.pdfIn PDF document text
    • http://ridgelyes.com/uploads/1/3/0/7/130776408/sesujetebukofuzaruda.pdfIn PDF document text
    • http://ilovefatjacks.net/uploads/1/3/0/2/130271154/zifivur-raluvizekexa.pdfIn PDF document text
    • http://mail.shrikirent.co.il/uploads/1/3/0/7/130739139/0a942bcbe9af373.pdfIn PDF document text
    • http://shoptrueblessings.com/uploads/1/3/0/7/130738555/pezitom_fojarelujomis.pdfIn PDF document text
    • http://hostmaster.fysiotherapiekoningsweg.nl/uploads/1/3/0/5/130588754/1052483.pdfIn PDF document text
    • http://artbyvivi.com/uploads/1/3/0/4/130476462/ac4419976.pdfIn PDF document text
    • http://www.rawanrajab.com/uploads/1/3/0/7/130775539/4343345.pdfIn PDF document text
    • http://cpaforfamilywealth.com/uploads/1/3/0/4/130435781/7464979.pdfIn PDF document text
    • http://applausehotelcalgarywb.devsite-1.com/uploads/1/3/0/5/130588858/130588858.html#advanced+life+support+provider+manual+pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000306c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306C 8064 bytes
SHA-256: 76cbe9c580f9f602f8f4a1a48d2848878c56b793e7544e2f7becc9d7635f3460