Malicious PDF — malware analysis report

Static analysis result for SHA-256 624b4a92c6995e82…

MALICIOUS

PDF

45.3 KB Authoring application: OpenOffice.org
MD5: 90399980096f5e6b6abf4b2e8b1ed593 SHA-1: 072586d491d58b13e8a9e1d2a908bb3932e22382 SHA-256: 624b4a92c6995e8237b364c5b72298d74e06146073695dd9801c23c15c8841ec
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted, and the document body was unreadable, limiting further analysis of specific payloads.

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://www.chestpaindoctor.com/uploads/1/3/0/4/130483680/b5b99db656.pdf
    • http://ferrumfratres.com/uploads/1/3/0/6/130604525/9345880.pdf
    • http://hostmaster.vitoshapartners.com/uploads/1/3/0/4/130488371/f6537175a85e3b.pdf
    • http://theawesomeguide.com/uploads/1/3/0/5/130538866/wejapebup.pdf
    • http://www.magicalforestvday.com/uploads/1/3/0/4/130483582/692674.pdf
    • http://nsms.northsmithfieldschools.com/uploads/1/3/0/6/130620854/bixexexurejixota.pdf
    • http://urbanventilation.com/uploads/1/3/0/8/130814088/badifisosipamala.pdf
    • http://oakandiris.com/uploads/1/3/0/7/130775984/molovi.pdf
    • http://multitechroma.com/uploads/1/3/0/4/130435873/bomuxen.pdf
    • http://zachsart.org/uploads/1/3/0/6/130639267/fixedasukuke.pdf
    • http://actsimplified.com/uploads/1/3/0/3/130313428/a9ab0e1f177.pdf
    • http://zenergyclub.com/uploads/1/3/0/7/130738819/9653ceff3bbed4.pdf
    • http://webdisk.speech4kidz.com/uploads/1/3/0/7/130738940/vimut.pdf
    • http://iloveyoujennifer.net/uploads/1/3/0/7/130776630/pijamekuze.pdf
    • http://queencityministorage.com/uploads/1/3/0/7/130776239/3827013.pdf
    • http://outdoorsmetalguy.com/uploads/1/3/0/7/130738991/mewinotuvijo.pdf
    • http://victoryit.info/uploads/1/3/0/7/130775211/2bd2429.pdf
    • http://plussizebridalsma.com/uploads/1/3/0/3/130312996/7622780.pdf
    • http://thegaminghatch.com/uploads/1/3/0/6/130603860/2241599.pdf
    • http://marshfieldcomputerrepair.com/uploads/1/3/0/3/130313286/f3614814.pdf
    • http://haroldhowell.com/uploads/1/3/0/7/130738680/94f1d534f.pdf
    • http://sucre.de/uploads/1/3/0/3/130313613/fimutopigaso.pdf
    • http://bbfcafe.shop/uploads/1/3/0/6/130620968/2071391.pdf
    • http://neuro-dive.com/uploads/1/3/0/2/130289618/vilofujapas.pdf
    • http://lebojin.br3h.com/uploads/1/3/0/3/130323298/130323298.html#agile+and+waterfall+phases
    • http://imawoikiru.saga-s.co.jp/uploads/1/3/0/3/130313089/risiwafusudozig_fefinuxazixeju_losopalod_lasafewakema.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e0d.bin
7db770685548fb4dcb1ac3a12e24193c73f610d170bcc2a468ac8e8615d64236		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0D 7808 bytes

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