Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd58c33ddedba4a0…

MALICIOUS

PDF

36.1 KB Authoring application: Karbon
MD5: ca3a273666c1868862c3577081fc5003 SHA-1: d8bb60aa373b1a839ae140d40a98b2ab4f96778c SHA-256: fd58c33ddedba4a03fb6d77eab2fd7e203baa9a1b9d0e8649a34e5b557892794
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a SEO link farm, embedding numerous links to external PDF files hosted on various domains. This technique is often used to manipulate search engine rankings or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support the malicious nature of this file. No scripts were extracted, and the document body content was heavily obfuscated and truncated, preventing a deeper analysis of its specific lure.

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://thejackquest.com/uploads/1/3/0/7/130738641/bararoraderu.pdf
    • http://getworks.us/uploads/1/3/0/3/130323520/2689533.pdf
    • http://brdpllc.com/uploads/1/3/0/5/130543386/xowoxuke-nipumenibig-detogomomelo-sawokojasagi.pdf
    • http://twalight.com/uploads/1/3/0/6/130639311/sifilerekupizefap.pdf
    • http://keishanaskreations.xyz/uploads/1/3/0/7/130775792/wolagaliwu.pdf
    • http://nkaskephotography.com/uploads/1/3/0/6/130604117/demun_wurepakokidaz.pdf
    • http://cienaraenelson.com/uploads/1/3/0/4/130476065/butexumitamawo.pdf
    • http://michaelvickersbaritone.com/uploads/1/3/0/5/130539319/jivenerorelizu.pdf
    • http://happyplanetproject.org/uploads/1/3/0/3/130313632/xiwigegopibaka_romod_pifozax_sasegodimolu.pdf
    • http://ishiro.com/uploads/1/3/0/2/130291499/velolozukojagisosaga.pdf
    • http://aandnlawn.com/uploads/1/3/0/6/130639386/5864877.pdf
    • http://mysummit18.com/uploads/1/3/0/2/130288427/db05a421ac0.pdf
    • http://nealybirthandlactation.com/uploads/1/3/0/5/130551457/405e5bdb2380b2a.pdf
    • http://zazzletools.com/uploads/1/3/0/8/130814161/a4ef206f7e1.pdf
    • http://norcalsetac.net/uploads/1/3/0/2/130289669/2308371.pdf
    • http://autodiscover.pamelaj.com/uploads/1/3/0/4/130435905/e1a985c0b.pdf
    • http://luckycrazylife.com/uploads/1/3/0/9/130969811/e97e92eb55.pdf
    • http://sydataylor.com/uploads/1/3/0/7/130739280/1109724.pdf
    • http://holypost.mobi/uploads/1/3/0/4/130488946/5106616.pdf
    • http://www.beau-makeup.com/uploads/1/3/0/6/130621000/gujujujewit.pdf
    • http://visitcaddogap.com/uploads/1/3/0/7/130740514/52b0ff91722.pdf
    • http://1988ltb.com/uploads/1/3/0/5/130588452/efa5cfa.pdf
    • http://hepburnhideaway.com/uploads/1/3/0/6/130605396/130605396.html#uefa+champions+league+2018-19+fixtures+indian+time
    • http://visitcaddogap.com/uploads/1/3/0/7

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c10.bin
17ae0becb15bf746a2791eca4b692d4554e7ee3adddeb67c5188ac38e9bad748		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C10 7892 bytes

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