Malicious PDF — malware analysis report

Static analysis result for SHA-256 df905b436a51301e…

MALICIOUS

PDF

61.7 KB Authoring application: Scribus
MD5: b7cc44122e52d638162bed4a121209ea SHA-1: 2cfd8cdde2e6a0f163f07f28f06e0a87230d0003 SHA-256: df905b436a51301e0cbb5880eb1afb548ffc373a4aef9a548a0bd34674b1f7ae
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a phishing campaign aiming to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mindlogger.info/uploads/1/3/0/2/130291471/majupepeg_zuvuni_nunabumiwo.pdf
    • http://daostable.org/uploads/1/3/0/7/130739584/3620038.pdf
    • http://ksaesthetics.com/uploads/1/3/0/7/130739726/7268162.pdf
    • http://claireheartpaul.com/uploads/1/3/0/7/130776888/3fc497704fef998.pdf
    • http://fairpricedroofing.com/uploads/1/3/0/3/130313359/mozuzebin.pdf
    • http://nannymoscow.com/uploads/1/3/0/4/130435638/4005884.pdf
    • http://hostmaster.ecrinsapartment.com/uploads/1/3/0/6/130621719/zosejumolemaramaz.pdf
    • http://sar-casm.com/uploads/1/3/0/5/130589160/pikitamu.pdf
    • http://www.threeseedsofchange.com/uploads/1/3/0/4/130436204/kopurid.pdf
    • http://thedecoratorseye.com/uploads/1/3/0/8/130814193/5010274.pdf
    • http://updanceacademy.com/uploads/1/3/0/6/130605203/4b1363.pdf
    • http://growthdemons.com/uploads/1/3/0/6/130620296/labuzivojij-jigiped-lekolalubom.pdf
    • http://www.drlogan.com/uploads/1/3/0/3/130379266/8642019.pdf
    • http://tiffany-baker-se-1.rominastiebenphotography.com/uploads/1/3/0/3/130323302/130323302.html#hemoglobin+structure+ppt

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000112a.bin
c238a72026d5596a36463d820bf15989eb01e18f3507033a57d96d35cfd1e0f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112A 11224 bytes
font_01_sfnt_off0000a690.bin
b095009e1aa7b679086a2dd093949a1e2bfdfa179c83d9e64a20210f199a406d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA690 1544 bytes
font_02_sfnt_off0000adb6.bin
c048ac4ed90d63bfae46472f65f9cf6fc0bd5e75369f2d8f28771a6d96a2731c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADB6 3156 bytes

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