Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a01a6a9144948b…

MALICIOUS

PDF

40.8 KB Authoring application: Smallpdf Desktop
MD5: 1dd12e5040b8bddccef76c96cc826330 SHA-1: 79544b34343326d5992bddfe8003447a1aaa75e5 SHA-256: 60a01a6a9144948bf0244b1fa8d31da8bd02a6fb132bfc8dfec80dff66abb82a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or SEO spam campaign where the document acts as a lure. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, limiting the analysis of specific execution behaviors.

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://tamisonuwe.motorolka.ru/uploads/2020/01/28/dovatefasepinaronuxe.pdf
    • http://xotasi.the-future-company.com/uploads/2020/01/28/4953251.pdf
    • http://libi.changeurself.win/uploads/2020/01/28/jotozidunavoro.pdf
    • http://fuponono.ksptambov.ru/uploads/2020/01/28/luderowidakoj_ruruj.pdf
    • https://vukerikokuw.weebly.com/uploads/1/3/0/5/130551534/nironatep.pdf
    • http://xecfolqad.icu/uploads/2020/01/27/5487580.pdf
    • http://wirevupi.rajatmeena.com/uploads/2020/01/28/8176988.pdf
    • http://migu.ruonkolog.ru/uploads/2020/01/28/9b1a587.pdf
    • http://audiostart16.icu/uploads/2020/01/27/0b8f87ab9b.pdf
    • http://xlebnoemesto.ru/uploads/2020/01/27/3820241.pdf
    • http://faw.comparatuapuesta.com/uploads/2020/01/28/garepapo-rapukutidiva.pdf
    • http://nabivib.adamtierney.net/uploads/2020/01/27/668483.pdf
    • http://wamot.vagabundeandoconmochila.com/uploads/2020/01/28/422aee0f592d.pdf
    • http://liluvesi.aviakompanija.ru/uploads/2020/01/27/zarojumaxekukipu.pdf
    • https://xekimanasebaje.weebly.com/uploads/1/3/0/5/130540085/gonad_zitetapuvunagop_siwunijipus_masitila.pdf
    • https://runegafulavo.weebly.com/uploads/1/3/0/5/130550738/fuwila.pdf
    • http://sexgaylove.com/uploads/2020/01/28/458305.pdf
    • https://buguzaragon.weebly.com/uploads/1/3/0/4/130483983/xepazadarupofok.pdf
    • http://kipururogi.bp-bas.com/uploads/2020/01/28/9ff9177.pdf
    • https://morarafaf.weebly.com/uploads/1/3/0/5/130590224/130590224.html#el+alcoholismo+y+drogadiccion+en+adolescentes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015a1.bin
d3da3852ec14eb2a8ec1682468fd83e20829a8b12edb800c4d3bbda3f08af12d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15A1 8904 bytes

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