Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bde120149c5ccb2…

MALICIOUS

PDF

34.8 KB Authoring application: QPDF First seen: 2020-09-24
MD5: d4cbf15096f31a154c97fd8b24984642 SHA-1: bb8d92a1eacfab7c487c6818833d4fd76fbedfd1 SHA-256: 7bde120149c5ccb2ba6d12dec4110910bfb25232ad13499f6aacd115ff42e7f7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files hosted on various domains, indicative of a link farm or a distribution mechanism for further malicious content. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a high ML classifier score further support its malicious nature. The document body is heavily obfuscated and unreadable, but the presence of external links and the heuristic firings strongly suggest a phishing or content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://towncarservicekirkland.com/uploads/1/3/0/6/130621315/wagojerise-nepikadutizu-fowarujajileme-wafazajafodu.pdf In PDF document text
    • http://pattayabeachproperty.com/uploads/1/3/0/5/130551164/lukum.pdfIn PDF document text
    • http://gurudsdg.site/uploads/1/3/0/4/130476423/059908cbe9e44.pdfIn PDF document text
    • http://parasport-news.com/uploads/1/3/0/4/130488934/vabumup.pdfIn PDF document text
    • http://carrizalesforwarding.com/uploads/1/3/0/6/130604319/7551277.pdfIn PDF document text
    • http://pdxpersonalinjury.com/uploads/1/3/0/8/130814586/9183578.pdfIn PDF document text
    • http://drpattymain.com/uploads/1/3/0/2/130287281/jukokifipor_tizajeg.pdfIn PDF document text
    • http://www.stylingcantaluppi.com/uploads/1/3/0/3/130323381/c75ea9731d98b4.pdfIn PDF document text
    • http://mespinozamen.com/uploads/1/3/0/4/130435891/lakuvonexusepiz-kovadamuvuza-sujok-wazamitabogakox.pdfIn PDF document text
    • http://tihder.com/uploads/1/3/0/7/130776888/5345115.pdfIn PDF document text
    • http://survey.rodhillportraits.com/uploads/1/3/0/6/130639544/130639544.html#cheat+gta+san+andreas+vice+city+stories+psp+bahasa+indonesiaIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3016 8496 bytes
SHA-256: c8aea7487e67bf33ce5ef9e5ad03e0fb06c6fc76fac25ad3da307d31d48294c1

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