Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec108d9f7b03c8f…

MALICIOUS

PDF

35.0 KB Authoring application: Mobipocket Creator
MD5: 23e3fe30a05c3931fcc1e2e682a7e2c3 SHA-1: 0357a3f8b697f1ba525ef5a19898f492166b0fc1 SHA-256: 6ec108d9f7b03c8f4259270fb5c545b72690c36ba6bf234cd1e2c89323dc4b73
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or SEO spam. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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://wainuiponyclub.org/uploads/1/3/0/7/130738759/bomaxajesokopilajafu.pdf
    • http://hostmaster.sunnseaweddings.com/uploads/1/3/0/7/130738951/3217779.pdf
    • http://hostmaster.ctacostume.org.uk/uploads/1/3/0/3/130312996/4bdfa2781.pdf
    • http://www.contact-ola.com/uploads/1/3/0/7/130775792/63723457f.pdf
    • http://inscienceitrust.net/uploads/1/3/0/6/130620293/bomerenero_wabaru_fesimumur.pdf
    • http://mydagangan.com/uploads/1/3/0/7/130739544/wedev.pdf
    • http://carsncoffeecafe.com/uploads/1/3/0/3/130313152/xopegebamo_xiwedigunaxuwe_xumijuber.pdf
    • http://midlandsallstar.com/uploads/1/3/0/5/130550684/c21578.pdf
    • http://riverrepublicproductions.com/uploads/1/3/0/2/130288386/domawinuvezifez.pdf
    • http://paulbrownierealtor.com/uploads/1/3/0/5/130547215/3985671.pdf
    • http://crosshopefellowship.org/uploads/1/3/0/7/130740033/sixugidu_zesubifu_zifabigakilefow.pdf
    • http://sparkspcrepair.com/uploads/1/3/0/4/130475938/1334252.pdf
    • http://atlasthemighty.com/uploads/1/3/0/5/130590508/7208985.pdf
    • http://nizhonipropertiesllc.com/uploads/1/3/0/2/130289270/gokad_mudapubi_xuteg.pdf
    • http://elcantaro.org/uploads/1/3/0/7/130740477/5373249.pdf
    • http://acemenus.com/uploads/1/3/0/5/130539255/rukoxawajiwupasixi.pdf
    • http://newenglandsunroomrepair.com/uploads/1/3/0/7/130738644/794dae4efb62b8a.pdf
    • http://aomenduchangeluosizhuanpan.br3h.com/uploads/1/3/0/4/130436204/130436204.html#advantages+and+disadvantages+of+inductive+and+deductive+reasoning

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e3d.bin
6b0bab0f5741d930052ca865a3764bfe0a382684dfc646655c11a84f737ebecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3D 6912 bytes

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