Malicious PDF — malware analysis report

Static analysis result for SHA-256 f555e4e29ce27575…

MALICIOUS

PDF

39.6 KB Authoring application: GIMP
MD5: 4c0fe1b9d4ca380f8453070d7b4cad31 SHA-1: 1f721ff06a03cfdd86593704cd3b58901e2110b6 SHA-256: f555e4e29ce27575e6a132973a61a78ed157781792548ec845bcef55f0d5c4a2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file 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 distribution mechanism for further malicious content, as suggested by the ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains garbled text and references to 'Diabetes ketoacidosis amboss', which appears to be a lure to disguise the malicious intent.

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://yaamarbellydance.com/uploads/1/3/0/8/130874519/ropedig.pdf
    • http://broomsforhire.com/uploads/1/3/0/4/130476502/nexukogogab.pdf
    • http://www.essentialcicada.com/uploads/1/3/0/7/130739982/rasipokiloziwut.pdf
    • http://natonee.com/uploads/1/3/0/6/130639903/9797825.pdf
    • http://medikamentekaufen.com/uploads/1/3/0/7/130739371/gewarojibovove_mirebolame_sevufuda.pdf
    • http://montessoricasa.org/uploads/1/3/0/7/130739105/xilonazesi.pdf
    • http://advbiocomp.net/uploads/1/3/0/6/130621047/kolonavu.pdf
    • http://www.tedhaynieforcommissioner.org/uploads/1/3/0/8/130814176/puvuvazaraf.pdf
    • http://howtosoul.com/uploads/1/3/0/2/130272930/d6f7793bd1.pdf
    • http://www.businesscoachingprofetis.com/uploads/1/3/0/3/130323295/pokovejalojewen_lovopowezafap_luliwatasuti_fesifizeze.pdf
    • http://www.leaderkast.com/uploads/1/3/0/7/130776183/130776183.html#diabetes+ketoacidosis+amboss

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042fd.bin
58ec03f26eb7af2c81cee2e65f76d040d23f5c7fd8a9f3c5e72f881d9f044864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42FD 8684 bytes

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