Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fcf081becfe81a3…

MALICIOUS

PDF

37.4 KB Authoring application: PDF Studio First seen: 2020-09-24
MD5: ba6ebc99c4a16af30bfbea9cd8f68811 SHA-1: 957622ba786a487e514d6cd0528a2b8d249be460 SHA-256: 7fcf081becfe81a360d631a0420edf0cc7b91a70cc30ec8decb448449727719f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output strongly indicate malicious intent. The primary function appears to be directing users to a vast collection of other PDF files hosted across numerous domains, likely for SEO spam or to distribute further malware.

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://ablehorsewomanship.com/uploads/1/3/0/5/130552034/6321844.pdf In PDF document text
    • http://thearchitecturalgardendigest.com/uploads/1/3/0/3/130323167/5667263.pdfIn PDF document text
    • http://usdaum.one/uploads/1/3/0/7/130775679/4976e08c04.pdfIn PDF document text
    • http://musiowskyed.com/uploads/1/3/0/7/130775760/nexeb-sijepitix.pdfIn PDF document text
    • http://cascadesoft.net/uploads/1/3/0/7/130739233/e3c624b46558406.pdfIn PDF document text
    • https://pepudenonibasi.weebly.com/uploads/1/3/0/4/130476298/6214696.pdfIn PDF document text
    • http://mynkylc.com/uploads/1/3/0/3/130313536/zoderupuguxos.pdfIn PDF document text
    • http://rheacafeandgrill.com/uploads/1/3/0/2/130271111/gimulijogajatif_gowin_wunibafav_gadiwev.pdfIn PDF document text
    • http://tattoovictoriatexas.com/uploads/1/3/0/5/130588533/biruduzigixuzusagaf.pdfIn PDF document text
    • http://aniltanriverdi.com/uploads/1/3/0/4/130488547/kalofaravepota.pdfIn PDF document text
    • http://ethansanderlin.com/uploads/1/3/0/5/130588948/vuvelifelekuwunini.pdfIn PDF document text
    • http://welcomehomeveteransusa.org/uploads/1/3/0/6/130604798/bizavo-fuwogejakavafe-jibasu-piturupepatibe.pdfIn PDF document text
    • http://nghomeimprovment.com/uploads/1/3/0/5/130539034/zikememivex-bawibe.pdfIn PDF document text
    • http://de.jwoc.de/uploads/1/3/0/5/130589099/e9d92.pdfIn PDF document text
    • http://millerdriscollrenovations.weebly.com/uploads/1/3/0/4/130483244/nodepozo.pdfIn PDF document text
    • http://cairnsclassictours.com/uploads/1/3/0/2/130289756/biduziluxamevez-lekurinululo-xisalatufezogaw-ruxir.pdfIn PDF document text
    • http://nathanchizenreviews.com/uploads/1/3/0/7/130738650/5771568.pdfIn PDF document text
    • http://lekow.clash-x.space/uploads/2020/01/29/xatadijewivifokil.pdfIn PDF document text
    • http://buddy-burner.com/uploads/1/3/0/2/130289711/4942968.pdfIn PDF document text
    • http://swietkowskilaw.com/uploads/1/3/0/4/130436147/a8f0448405.pdfIn PDF document text
    • http://abetamassage.com/uploads/1/3/0/6/130604220/zuwijugof_kaporor_muwalaketewe.pdfIn PDF document text
    • http://juliablack.net/uploads/1/3/0/3/130323510/lakuguvomasi.pdfIn PDF document text
    • http://adeptwebsolutions.com.au/uploads/1/3/0/3/130313632/vemaromokipisefe.pdfIn PDF document text
    • http://nswminiaturepony.com.au/uploads/1/3/0/2/130288661/7753151.pdfIn PDF document text
    • http://chuyitos.com/uploads/1/3/0/5/130588885/130588885.html#explain+noun+clause+as+subject+and+objectIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7E 7448 bytes
SHA-256: d069355dd48ee15d4a2ef8e501105a9c0293c874222cfff2d2314447595fcb54

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