Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22efc68d291d5f1…

MALICIOUS

PDF

41.6 KB Authoring application: Serif PagePlus
MD5: b3651d47cb4f01109d3ee3d3e58dce32 SHA-1: d81ea3290f2ff06a1e25e6329b6b3aee523ef83e SHA-256: d22efc68d291d5f1478c8f24999d3e69b4a83edd4eb70412bf51f719853e806d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or SEO spam. The document body contains garbled text but also includes URLs that are part of the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://rynesfamily.com/uploads/1/3/0/2/130271047/9907959.pdf
    • http://xusugodisi.selenamarket.ru/uploads/2020/01/29/pakijukasokunov.pdf
    • http://cubiocloud.com/uploads/1/3/0/5/130588489/kaxirigejede_pubumunuket_bozifubarin.pdf
    • http://neteller-net.xyz/uploads/2020/01/27/3b4c9f10fee23.pdf
    • http://sig.bottinnok.xyz/uploads/2020/01/28/saxitizozubozek.pdf
    • http://zidule.restavratsiya.com/uploads/2020/01/28/jupejabuvukok-laronubepuv-tekufizaga.pdf
    • https://wujifonetipipef.weebly.com/uploads/1/3/0/2/130270864/rebutotupi.pdf
    • http://nativeamericanfluteshop.com/uploads/1/3/0/4/130476493/nusapofafit.pdf
    • http://indieconnectors.com/uploads/1/3/0/2/130273801/f99be9556d1.pdf
    • http://apeculiarthud.com/uploads/1/3/0/5/130543476/palevikuxokem.pdf
    • http://mingcamellia.com/uploads/1/3/0/5/130590224/1707463.pdf
    • http://basketball-skills-training.com/uploads/1/3/0/4/130478566/vesixid.pdf
    • http://leilaamani.com/uploads/1/3/0/6/130621261/rixizonagaj-lizokerufolilon-dakiwemawu-tipunuxug.pdf
    • http://nevermetapodcast.com/uploads/1/3/0/4/130436399/26b401334.pdf
    • http://vipiski-besplatno14.icu/uploads/2020/01/27/zunijitoburikujujeju.pdf
    • https://loselelu.weebly.com/uploads/1/3/0/5/130550783/gumovosofozopu.pdf
    • http://mixbotanicals.com/uploads/1/3/0/6/130620764/33e73147462.pdf
    • http://storedesigns.in/uploads/1/3/0/4/130483204/jazudobipidu-kinaxixajirap.pdf
    • http://bendigolab.com/uploads/1/3/0/6/130603771/ziwaneweruj.pdf
    • http://diplomaframesusa.com/uploads/1/3/0/5/130551154/9644760.pdf
    • http://annemarshall.com/uploads/1/3/0/6/130604703/zizukufakeloviwe.pdf
    • http://nekomofa.o-studia.ru/uploads/2020/01/27/158b3fa7a03c8.pdf
    • http://6foot7dave.com/uploads/1/3/0/5/130551058/957001.pdf
    • http://rancho-oaks-gs.org/uploads/1/3/0/6/130639278/lexetebunosape-lelok-rezisuloxagiza.pdf
    • http://sheqplanet.com/uploads/1/3/0/3/130379228/130379228.html#barbie+dreamhouse+adventures+game+apk
    • http://annemarshall.com/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000017e2.bin
758a03271469e7780a1d7ac7f21e3b89368db4fc9da031ee8fc83b92cffe4803		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17E2 8996 bytes

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