Malicious PDF — malware analysis report

Static analysis result for SHA-256 30868cd3805568ed…

MALICIOUS

PDF

36.2 KB Authoring application: QPDF First seen: 2020-09-07
MD5: 5385820e258d3e8ec3d71f1d2caa4c05 SHA-1: e0661d98ecf08e15c1595101955ea29fe90ae1b8 SHA-256: 30868cd3805568edc1941e744fe9cdb684ec0e48ed8fdf5414cd784614f7abcc
192 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs pointing to other PDF files across various domains. This behavior is indicative of a link farm, likely used for SEO manipulation or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' reinforces the malicious nature of this file.

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://agapekennelswhitewater.com/uploads/1/3/0/3/130313120/36060d160.pdf In PDF document text
    • http://acaringpregnancy.com/uploads/1/3/0/5/130551325/vafulinabomavevati.pdfIn PDF document text
    • http://gardensoft.space/uploads/1/3/0/7/130739535/1f1a6b1ad55c93.pdfIn PDF document text
    • http://nawalphotography.com/uploads/1/3/0/5/130545194/xoxozalodeboxib.pdfIn PDF document text
    • http://recommended-buys.com/uploads/1/3/0/6/130604229/neradurarax.pdfIn PDF document text
    • http://barryboycephotos.com/uploads/1/3/0/4/130483248/xizumekita_zebidoxosiv.pdfIn PDF document text
    • http://mrsottocounselingcorner.com/uploads/1/3/0/6/130621874/793e6a75.pdfIn PDF document text
    • http://dominikvizesi.com/uploads/1/3/0/5/130551464/6471605.pdfIn PDF document text
    • http://craigheadcounty4hrabbitclub.com/uploads/1/3/0/7/130776167/6614145.pdfIn PDF document text
    • http://designer-inc.com/uploads/1/3/0/6/130639889/zepekodaligiz.pdfIn PDF document text
    • http://ocwswwtp.com/uploads/1/3/0/6/130604904/sofabikuka-togezipi-noxuvuruturin-nezegamumabov.pdfIn PDF document text
    • http://thenaturalway.shop/uploads/1/3/0/6/130620576/e9eb3d.pdfIn PDF document text
    • http://xtremetruckandtrailer.com/uploads/1/3/0/2/130289158/virixinorutu.pdfIn PDF document text
    • http://mytexascriminaldefenseattorneys.com/uploads/1/3/0/2/130287462/sowasumabu.pdfIn PDF document text
    • http://lulubday.com/uploads/1/3/0/2/130272266/5042117.pdfIn PDF document text
    • http://localfixclinic.com/uploads/1/3/0/6/130605292/3f407c79dcfb46.pdfIn PDF document text
    • http://100kchallenges.stefanaarnio.com/uploads/1/3/0/7/130775984/130775984.html#let+me+down+slowly+piano+notes+easyIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E21 9004 bytes
SHA-256: 943140ffca5fa4e3983bb603486fdfba4a83e0b29b439e5f9ec74db236302d14