Malicious PDF — malware analysis report

Static analysis result for SHA-256 085a70354e2043af…

MALICIOUS

PDF

39.1 KB Authoring application: PDF Studio
MD5: d3fad0489750c4d1a6bed51e61eb4683 SHA-1: 60c8d05767029dff68940f8418a2b513fa016fac SHA-256: 085a70354e2043af3d479c3d4f9729b3a8da94f8eea96f23eba799fa58414449
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier further support its malicious nature. The embedded URLs are likely used to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://zuziret.nikitpvv74club.ru/uploads/2020/01/27/vetezuronamud_kuvipofabotifa_mibag.pdf
    • http://rlx.space/uploads/1/3/0/6/130604203/1c772ab8e.pdf
    • http://ridgelineohio.com/uploads/1/3/0/4/130483487/7994522.pdf
    • http://svdreamer.com/uploads/1/3/0/3/130379604/c3d860b.pdf
    • http://morestyle.com.au/uploads/1/3/0/5/130590462/kipokul.pdf
    • http://omeganaturals.ca/uploads/1/3/0/2/130288401/0a565.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/5/130590618/guralobapabo.pdf
    • http://alexanderbridgeforth.com/uploads/1/3/0/3/130313410/xusapawa-pewuda-pevejevew.pdf
    • http://jlu-boston.org/uploads/1/3/0/4/130477492/mesedipafo.pdf
    • https://xifejase.weebly.com/uploads/1/3/0/6/130605206/994125.pdf
    • http://johnlinneballtutoring.com/uploads/1/3/0/5/130539090/349ec1aac7f1.pdf
    • http://momentcapture.net/uploads/1/3/0/4/130483290/salijuv_nasepoline_raxiduso.pdf
    • http://kidshoeology.com/uploads/1/3/0/5/130550960/mimarilelelu.pdf
    • http://xizax.girlsonvideo.store/uploads/2020/01/28/9824552.pdf
    • http://artbyjonmcgaa.com/uploads/1/3/0/5/130539227/27809f09a.pdf
    • http://campkennedy.com/uploads/1/3/0/6/130620337/8b3ad429c9d.pdf
    • http://jewaduleka.kuhni-msc005.icu/uploads/2020/01/28/a60b9bb2c.pdf
    • http://authlogin.co/uploads/2020/01/27/8266719.pdf
    • http://rekalovo.copyrightcontact-100002174523652.com/uploads/2020/01/27/a5a68ab5523b65f.pdf
    • http://sugarvedelmiesmunkavedelmikft.com/uploads/1/3/0/4/130483376/ruxox.pdf
    • http://endoflifedoula.co/uploads/1/3/0/2/130287279/7883227.pdf
    • http://thomasvasasphotography.shop/uploads/1/3/0/6/130621980/sagegina.pdf
    • http://moodlabnewlife.nl/uploads/1/3/0/4/130479570/130479570.html#application+form+for+capitec+learnership+2019

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001670.bin
a940ecf5a469142c777002c1c78605b8607076b48b6d1961d7531fbf5795ecf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1670 7736 bytes

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