Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa667fe64909e13…

MALICIOUS

PDF

53.5 KB Authoring application: GIMP
MD5: be8830ded0b390b9adc1fd976bd9b5f2 SHA-1: 0f4030f4457883b04463acf47995e395a237c1a9 SHA-256: 0aa667fe64909e131a76041d9e00cce5384464efa53e887ac163913a58398dca
192 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm or SEO spam, containing a large number of links to other PDF documents hosted on various domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://untangled-web.net/uploads/1/3/0/3/130323355/gonidaxumajajafava.pdf
    • http://ashadeandco.com/uploads/1/3/0/7/130776811/xodomafewab.pdf
    • http://lttaxcollector.com/uploads/1/3/0/2/130271048/mugero-wefiwabotona-kolora.pdf
    • http://newsmandan.net/uploads/1/3/0/5/130541351/4683908.pdf
    • http://thearthurspectorscam.org/uploads/1/3/0/7/130740461/5d9ea3da.pdf
    • http://matterportservices.com/uploads/1/3/0/7/130739133/bijuxuzona_meropunadisesi_newalikum.pdf
    • http://www.wwwfictionbysamuelhyoung.com/uploads/1/3/0/7/130776745/nirazelijaxo_jitilareneximu.pdf
    • http://peachy3d.com/uploads/1/3/0/5/130550903/3764984.pdf
    • http://www.rhinocs.co.uk/uploads/1/3/0/5/130539393/misab.pdf
    • http://barryboycephotos.com/uploads/1/3/0/6/130604162/6495831.pdf
    • http://cannabisrunvt.com/uploads/1/3/0/7/130775792/36607af5ed8b569.pdf
    • http://miam-foundation.org/uploads/1/3/0/7/130739392/rojozesog.pdf
    • http://ncrage.com/uploads/1/3/0/3/130323996/1937460.pdf
    • http://ansaia.com/uploads/1/3/0/5/130539078/830e5454f42.pdf
    • http://borlandfreeclinic.org/uploads/1/3/0/5/130588277/225910.pdf
    • http://watersidersnbpt.com/uploads/1/3/0/3/130324390/jufikigovebekizurika.pdf
    • http://madeleinevionnet.net/uploads/1/3/0/6/130620391/veraberutumerox_belelewojeg_lotolinefot.pdf
    • http://miriannysrivasfnpcmedicalaesthetics.com/uploads/1/3/0/5/130588165/6e4762f1ee.pdf
    • http://niveditainstitutions.com/uploads/1/3/0/5/130540176/fuvonizepu-ruludilanopamop-wibabinexumepap-xolilem.pdf
    • http://nurseries.shop/uploads/1/3/0/5/130543353/1999951.pdf
    • http://nestednotebooks.net/uploads/1/3/0/5/130588320/9133287.pdf
    • http://mccorkleagsales.com/uploads/1/3/0/4/130435661/130435661.html#boone+and+crockett+whitetail+map

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011cd.bin
2d8b3d99355ad99cc937de8021613b09cbb2d1f512f7519a4426128f3400c6c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD 8644 bytes

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