Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b86ec9976aeee4…

MALICIOUS

PDF

48.5 KB Authoring application: ImageMagick
MD5: 14bf3c70b9647fb320e36fe4b2254500 SHA-1: da5c6a45637d61da6b848ae8b67465a82bfabaea SHA-256: b3b86ec9976aeee4853a031ce12670aca14699c2071280b1c1b26e4ce52d3ac3
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, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' directly identifies the mass linking behavior, with the dominant host being bellabodypostopmedspa.com.

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://bellabodypostopmedspa.com/uploads/1/3/0/4/130483477/5208287.pdf
    • http://whitehallchoirs.com/uploads/1/3/0/4/130478295/174f11.pdf
    • http://thelizxx.shop/uploads/1/3/0/6/130605376/1453558.pdf
    • http://mountainreveriemassage.com/uploads/1/3/0/6/130603969/e10d8c3d04.pdf
    • http://troika.pw/uploads/2020/01/27/ketomewi_bawalet_xajolinekepurog_sonuro.pdf
    • http://2501fulton.com/uploads/1/3/0/4/130483350/wumod.pdf
    • http://studyinfo.ch/uploads/1/3/0/5/130543402/doxixoko_papufodono_fixov_refaforabape.pdf
    • https://rodigisid.weebly.com/uploads/1/3/0/4/130476456/rikebizutole_xusufonuzikasix_pulagim.pdf
    • http://sth-168.com/uploads/1/3/0/4/130488833/kamoluremo.pdf
    • http://kivelos.audiostart17.icu/uploads/2020/01/27/6a0942.pdf
    • http://nodoubthomeinspection.com/uploads/1/3/0/5/130589270/vibixo_dosilevinulixo_fotunanujipew_japeno.pdf
    • http://lastfrontiermusic.com/uploads/1/3/0/5/130588487/7587962.pdf
    • http://sinmaps.com/uploads/1/3/0/5/130590219/522c4.pdf
    • http://cbulloughinternshipportfolio.com/uploads/1/3/0/6/130639859/85e3ee.pdf
    • http://sauerlandhypotheek.nl/uploads/1/3/0/5/130590139/130590139.html#ecommerce+marketing+plan+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001448.bin
a6f9298fcc3486bdd61b7662d1e3dbad36458f659a091ba8ca81cb84dc6fb95a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1448 8612 bytes

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