Malicious PDF — malware analysis report

Static analysis result for SHA-256 19fc7fb8791ae555…

MALICIOUS

PDF

39.3 KB Created: 2020-03-30 04:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e138329a8d01f30bc368e506b5d1540e SHA-1: 3ce1babd5c5471e19d6c3f91f859bba5ff1d2323 SHA-256: 19fc7fb8791ae555bd9de747bce63760d8506ce871b0390c9ccf4320c6d9615d
72 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and lead to other PDF files. This suggests a link farm designed to lure users into downloading potentially malicious content. The presence of a 'download button' heuristic further supports this, indicating a deceptive user interface. No scripts were extracted, but the extensive link farm and the nature of the URLs point towards a phishing or malware distribution attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bernardobellostudio.com/uploads/1/3/0/6/130604693/130604693.html#jpg+to+autocad+converter+free+download+full+version
    • http://dateborn.com/uploads/1/3/0/7/130739431/limesefekab-vesumigowowuga.pdf
    • http://usaimmigrants.org/uploads/1/3/0/7/130738837/60615.pdf
    • http://pof-freeaddcalls.com/uploads/1/3/0/6/130620389/sejumevuratazulabuj.pdf
    • http://lovelizex.com/uploads/1/3/0/6/130620756/letodisozile_penotavibime.pdf
    • http://debbieelliswatercolours.com/uploads/1/3/0/6/130621721/7216233.pdf
    • http://hismotivation.com/uploads/1/3/0/2/130270934/kemasunuxitib.pdf
    • http://localistmarket.com/uploads/1/3/1/3/131398232/jikojozurote.pdf
    • http://webmail.demo.famhealth.com/uploads/1/3/0/7/130740477/pagab.pdf
    • http://evaryanmusic.com/uploads/1/3/1/0/131070096/3776520.pdf
    • http://noah-jacobs.com/uploads/1/3/0/2/130289662/tilagexo_rosiwotali_xomeduguteda.pdf
    • http://mosaicguides.com/uploads/1/3/0/9/130969080/fefozuwexunibog-mixodifum-gunixuxev-kameximo.pdf
    • http://stanzley.com/uploads/1/3/0/6/130639439/59af12caf929.pdf
    • http://acompanarte.org/uploads/1/3/0/3/130323100/tidadi.pdf
    • http://ateliersgb.com/uploads/1/3/0/6/130621048/xizoxir.pdf
    • http://mykwalk.com/uploads/1/3/0/6/130639781/1e2f2.pdf
    • http://uprightsolutionsbpo.com/uploads/1/3/0/2/130272587/f6a1c5378d56c.pdf
    • http://gather77.com/uploads/1/3/0/2/130289346/1671057.pdf
    • http://mit-photos.com/uploads/1/3/0/8/130815017/jibulak.pdf
    • http://voluntourismargentina.com/uploads/1/3/0/2/130289201/vonupu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ed1.bin
d7316e99f71fe5ddec7f712d8fd14061d98587188e4843b0073a693e0a2b0d86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED1 8468 bytes

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