Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3bf7c49a1c09a39…

MALICIOUS

PDF

39.9 KB Authoring application: Inkscape First seen: 2020-09-24
MD5: 5e6344557b40e80161eb12896ef17a0e SHA-1: ffb0dbc2119a8f43892804a52afaebfcedd1bdde SHA-256: b3bf7c49a1c09a3970325e1c629a2fa3483a011f14b48f70e7dca9ea1b69ccb9
192 Risk Score

Malware Insights

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

The PDF contains a large farm of external links, as detected by the PDF_SEO_LINK_FARM heuristic. The embedded URLs point to numerous PDF files hosted on various domains, suggesting a coordinated effort to redirect users. The ClamAV detection further confirms the malicious nature of the file, classifying it as Pdf.Phishing.TtraffRobotInstall. The document body contains garbled text, indicating it is not intended for human consumption but rather as a container for the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://primechairmen.com/uploads/1/3/0/5/130539092/bedonaxodijakom-wexosotexese-jogidelonipib.pdf In PDF document text
    • http://mingpaousa.com/uploads/1/3/0/5/130589430/sefipukabebagi.pdfIn PDF document text
    • http://betterenergyproducts.com/uploads/1/3/0/6/130621276/kapufamineneb-majigo-sewiwoje.pdfIn PDF document text
    • http://nkathleen.com/uploads/1/3/0/2/130270823/1398700.pdfIn PDF document text
    • http://neurologiccare.com/uploads/1/3/0/5/130589416/mesatebodo.pdfIn PDF document text
    • http://michaelgierl.com/uploads/1/3/0/7/130775056/7756422.pdfIn PDF document text
    • http://stonecreekglobal.net/uploads/1/3/0/5/130544448/vupatesatil_dijurupi_pabipa_ganutab.pdfIn PDF document text
    • http://treeservicechulavista.com/uploads/1/3/0/4/130476873/6825178.pdfIn PDF document text
    • http://effectiveinfotech.com/uploads/1/3/0/4/130436188/5998742.pdfIn PDF document text
    • http://www.scuti-advisory.com/uploads/1/3/0/6/130640069/1d4ebe022a4872.pdfIn PDF document text
    • http://ostakaa.com/uploads/1/3/0/9/130969206/zotevotudeb.pdfIn PDF document text
    • http://4us2wire.com/uploads/1/3/0/4/130488172/096db861.pdfIn PDF document text
    • http://12250parkway.com/uploads/1/3/0/3/130313316/kisumone.pdfIn PDF document text
    • http://chihchulin.com/uploads/1/3/0/6/130620509/843629.pdfIn PDF document text
    • http://guitarhugs.com/uploads/1/3/0/5/130588579/zujejeriwusimubi.pdfIn PDF document text
    • http://spencertunickbooks.com/uploads/1/3/0/6/130605175/xekipez.pdfIn PDF document text
    • http://diabolickal.com/uploads/1/3/0/7/130776142/terulul.pdfIn PDF document text
    • http://camp.greenbush.org/uploads/1/3/0/7/130776239/bubasinigobu.pdfIn PDF document text
    • http://enola-theword.com/uploads/1/3/0/2/130272862/bupugofotuwobuzar.pdfIn PDF document text
    • http://largetips.com/uploads/1/3/0/2/130289421/42239.pdfIn PDF document text
    • http://middletonandnewbigginparishcouncil.org/uploads/1/3/0/6/130640066/4603030.pdfIn PDF document text
    • http://ryansjewelryshop.com/uploads/1/3/0/4/130479210/564675.pdfIn PDF document text
    • http://blacklocustpastures.com/uploads/1/3/0/3/130379243/130379243.html#adding+and+subtracting+integers+worksheet+math+aidsIn PDF document text

Related samples 8

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_off00003a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A3B 8036 bytes
SHA-256: 49cf4e3bee2316f70aac855901ff030426f9e05b67e152a8f818d1b7b53bcd4c

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