Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b8e55c8f930e65…

MALICIOUS

PDF

52.0 KB Authoring application: OpenOffice.org
MD5: c11774c36c82c29b3a42aa7ba542e775 SHA-1: aa2bc5de495b6c055e4b09bbeabddf4f5a105ea7 SHA-256: b4b8e55c8f930e659f902d75d8000586a551548753a409bd3e9e2b1c24012f88
128 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on similar subdomains and follow a pattern suggesting a link farm designed for SEO manipulation. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' and the heuristic 'SE_URGENCY_LURE' indicate a phishing or malicious redirection attempt. The document body, though heavily corrupted, contains fragments related to 'Navodaya school admission form', which could be a lure to entice users to click the embedded links.

Heuristics 4

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.ship-of-theseus.org/uploads/1/3/0/4/130483844/1245d213fae2.pdf
    • http://sidewalksteve.com/uploads/1/3/0/7/130776499/sulivivakekudejujov.pdf
    • http://renee-tobin.com/uploads/1/3/0/4/130436285/begegala_fanabid_lenemosila.pdf
    • http://ngikngok.com/uploads/1/3/0/7/130776611/kurewikofisij-xelesivul.pdf
    • http://perfectedgeshop.com/uploads/1/3/0/7/130739021/jobovazujigedifewur.pdf
    • http://monolect.com/uploads/1/3/0/8/130874059/5400106.pdf
    • http://d-team.info/uploads/1/3/0/7/130775879/1861e.pdf
    • http://newnatureinc.com/uploads/1/3/0/5/130588347/kaforara.pdf
    • http://paintball.africa/uploads/1/3/0/7/130776245/wobom-vibonepilig-giwere-vubiwumaridi.pdf
    • http://ballalae.com/uploads/1/3/0/5/130544230/jasidol.pdf
    • http://gajusty.store/uploads/1/3/0/7/130739061/cbcf3edec6afa.pdf
    • http://areastrategy.com/uploads/1/3/0/7/130775934/jawemapavajub.pdf
    • http://fretbuzz.net/uploads/1/3/0/5/130541462/ronavifusixiba.pdf
    • http://www.kyliejennersinging.com/uploads/1/3/0/6/130621020/5595311.pdf
    • http://redteam3.net/uploads/1/3/0/5/130590030/2742905.pdf
    • http://74-123-72-211.mgwnet.com/uploads/1/3/0/6/130639632/130639632.html#navodaya+school+admission+form+2019

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000411f.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x411F 1388 bytes
font_01_sfnt_off00004a01.bin
efd773b5979498a20adf4359f9ffa3a6186986a9422424d6bf0a77f2f12c659c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A01 12536 bytes
font_02_sfnt_off00006e1c.bin
47e2493fd9afb956610e38b9ccfe2b211e8d1aa5c79590a7eb1f0363b60ad152		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1C 8908 bytes

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