Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ade469aa4cd98a9…

MALICIOUS

PDF

35.7 KB Authoring application: QPDF First seen: 2020-09-24
MD5: f535e22462f8a8250f09f35c29e2d404 SHA-1: 234cdbad5015de79f254741dea8d50978f6e41e6 SHA-256: 1ade469aa4cd98a936324d530f8aa901df4517a7966bc44e61c693607cc61527
192 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 external PDF files hosted on various domains. This behavior is indicative of a link farm or phishing campaign designed to direct users to potentially malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and traffic redirection 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://nc-customdesigns.com/uploads/1/3/0/3/130323143/visudiwevobeg_moweto_gubizuw_kobajejofe.pdf In PDF document text
    • http://shahwar.com/uploads/1/3/0/5/130539479/0f1bd4b5295c7fc.pdfIn PDF document text
    • http://mitsubishipricelist.com/uploads/1/3/0/2/130291552/d0a54743b533.pdfIn PDF document text
    • http://translatio.co.uk/uploads/1/3/0/7/130740217/f27c3.pdfIn PDF document text
    • http://stwilli.com/uploads/1/3/0/6/130639071/resanijozozeronativu.pdfIn PDF document text
    • http://zagleverage.com/uploads/1/3/0/4/130436357/rikafugeg_zuxin.pdfIn PDF document text
    • http://thelittlesleepyhead.com/uploads/1/3/0/7/130740141/5515488.pdfIn PDF document text
    • http://onlychild.life/uploads/1/3/0/7/130776791/5083834.pdfIn PDF document text
    • http://prometheanconcepts.org/uploads/1/3/0/7/130739876/movogoniwimikupetate.pdfIn PDF document text
    • http://advanceproductservices.com/uploads/1/3/0/4/130483811/satiwejoj.pdfIn PDF document text
    • http://soundinmotion.org/uploads/1/3/0/7/130738939/4031116.pdfIn PDF document text
    • http://noscopegaming.net/uploads/1/3/0/7/130776795/wumezaj.pdfIn PDF document text
    • http://mywebcheetah.com/uploads/1/3/0/4/130435509/werufijanunijulosuki.pdfIn PDF document text
    • http://unxpectedxpeditions.com/uploads/1/3/0/5/130589320/pikivoxupewedo_wokabaxefa.pdfIn PDF document text
    • http://nstarlight.com/uploads/1/3/0/8/130814065/97bef0139.pdfIn PDF document text
    • http://mybluemarket.com/uploads/1/3/0/4/130489262/sakerabepetuki.pdfIn PDF document text
    • http://regydev.store/uploads/1/3/0/6/130639217/7305765.pdfIn PDF document text
    • http://xtoid.com/uploads/1/3/0/2/130270834/766cbee4fd.pdfIn PDF document text
    • http://antiviruseprotectserviceonline.site/uploads/1/3/0/7/130775556/130775556.html#solidworks+macro+to+save+as+pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDC 7924 bytes
SHA-256: d4eb77746f9b45afb4c70ac3ae1e939d72191427fb7ed8579d961410805ac779