Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b4bc7b2416886c…

MALICIOUS

PDF

43.5 KB Authoring application: ImageMagick
MD5: 628ccf9bc74baffd773f111cbc375199 SHA-1: 8f06212765739ae87df81f4c5d2b5bdf2f84fae9 SHA-256: 93b4bc7b2416886c1a2333faa7f27a15196dbf96f845eda5d4c8c5f363149f54
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a link farm or phishing distribution mechanism. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious traffic redirection intent. The embedded URLs are the primary IOCs, pointing to numerous external PDF files.

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://doublecfarms.net/uploads/1/3/0/6/130604903/bigitanagirefejuzad.pdf
    • http://fitnessbst.com/uploads/1/3/0/4/130483469/bawezupowog.pdf
    • http://themusictheater.com/uploads/1/3/0/6/130639548/194b79f9e599fb9.pdf
    • http://msmaley.com/uploads/1/3/0/3/130313107/698055a68f7.pdf
    • http://voluntourismargentina.com/uploads/1/3/0/4/130483146/lejivujigosut-dowodaxuxuziz-lelebog.pdf
    • http://womivadi.ooo-sanatoriy.com/uploads/2020/01/27/lojadulimifozu-gosexuxo-kizivulen-joziz.pdf
    • http://keepcalmwaxon.com/uploads/1/3/0/6/130604233/2737299.pdf
    • http://lijinimax.paypal-support-limitted.com/uploads/2020/01/28/jajuka-xukabedodevipi-vilot.pdf
    • http://acupunctureexpress.com/uploads/1/3/0/2/130272937/jutavadulogu_kenodepozez.pdf
    • http://oldskoolroots.com/uploads/1/3/0/4/130435978/a28fc307c33d.pdf
    • http://windswept.co.za/uploads/1/3/0/5/130546415/5a54d84.pdf
    • https://wufamefaw.weebly.com/uploads/1/3/0/3/130313000/8aed51ddf54.pdf
    • http://david-arnebeck-news.com/uploads/1/3/0/5/130588332/2412ee25ae78fc.pdf
    • http://viv.copyrightcontact-1000005296384.com/uploads/2020/01/29/bcd11cc2.pdf
    • https://jexujijevuliru.weebly.com/uploads/1/3/0/5/130550887/litasomorivumuzotiw.pdf
    • https://xobologop.weebly.com/uploads/1/3/0/5/130542936/sufokikudegigu.pdf
    • http://ciircle.ca/uploads/1/3/0/5/130588799/7980868.pdf
    • http://videji.best-shanson.ru/uploads/2020/01/28/afb5e48.pdf
    • http://dadevilleband.com/uploads/1/3/0/5/130551433/keruribene.pdf
    • http://korori.picsonair.com/uploads/2020/01/28/jazezurazek.pdf
    • http://nxlevelgolf.com/uploads/1/3/0/5/130551237/totunorofuvevewalo.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/2/130274319/130274319.html#by+land+and+sea+march+sheet+music

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000167a.bin
9e3353d553162c182b30f31e830fbc0624fbbbdb25c711dd86786b3bbdaa3717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x167A 9304 bytes
font_01_sfnt_off00007047.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7047 2652 bytes

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