Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bdbc1ea40f5748d…

MALICIOUS

PDF

38.3 KB Authoring application: Serif PagePlus
MD5: f2b3c11b7d2efa8f0dc0f8c94d1fe1bb SHA-1: 0ed732d9666de078dfffeb1c3509851fc5c91aa6 SHA-256: 3bdbc1ea40f5748d79bb4f05a3d03f763244d916d41551e25d07a28db158071c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains, indicating a link farm or redirection scheme. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score support a malicious classification. The embedded URLs are the primary IOCs, suggesting a delivery mechanism for further malicious content or phishing attempts.

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://nationalbeardedqueen.com/uploads/1/3/0/2/130271080/fiwot.pdf
    • http://highsolaris.com/uploads/1/3/0/6/130605164/5105379.pdf
    • http://enterteaning.com/uploads/1/3/0/6/130639552/sisige.pdf
    • http://tec-is.com/uploads/1/3/0/5/130588931/49b88290cff.pdf
    • http://handsonmassages.com/uploads/1/3/0/4/130435762/3550916.pdf
    • http://visigoal.com/uploads/1/3/0/5/130589156/xerirofuju_zajatupuwofusus_vumun_jinuxirezevozo.pdf
    • http://cheryltoh.com/uploads/1/3/0/5/130539131/5038551.pdf
    • http://thelighterlamp.com/uploads/1/3/0/5/130543874/5324184.pdf
    • http://laurakraftowitz.com/uploads/1/3/0/6/130604259/555099337027.pdf
    • http://www.nickgreen68.com/uploads/1/3/0/7/130776114/todavutabig_xowofusafas_fezewax.pdf
    • http://www.legacytrusthk.com/uploads/1/3/0/5/130542940/sidajodinapivaw.pdf
    • http://skylandsconsulting.com/uploads/1/3/0/5/130588763/nosod-natisakifavulu-ropuwimiz.pdf
    • http://kelbels.org/uploads/1/3/0/7/130776075/130776075.html#how+to+change+font+size+in+pdf+files

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003e14.bin
0508ab9e5d86bdf1bed5f29ca4917f7f1afcb11e063705dd927bed313919e2be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E14 8020 bytes

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