Malicious PDF — malware analysis report

Static analysis result for SHA-256 29cf75304f58ee59…

MALICIOUS

PDF

37.2 KB Created: 2020-03-08 13:04:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bed6aa5fee94a0bc82762925e68c4dab SHA-1: 5ba45717658f2d4df52d068fab1c034a155f0c12 SHA-256: 29cf75304f58ee59df4cb564fc93c08430293568dbe8065a24dd05ca189820c5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified as a PDF link farm. The primary URL points to a page with "test listening ielts" in the fragment, suggesting a lure. The ML classifier strongly flagged this PDF as malicious. The presence of numerous numeric-slugged PDF links indicates a likely SEO manipulation or content distribution scheme, potentially leading to further malicious downloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://webmail.rodhillportraits.com/uploads/1/3/0/2/130289184/130289184.html#test+listening+ielts
    • http://prajavydyalayam.org/uploads/1/3/0/3/130323478/1751712.pdf
    • http://isthegod.com/uploads/1/3/0/6/130620849/xarenixibirasafapexi.pdf
    • http://davidinsight.com/uploads/1/3/0/7/130775023/4b1ee817b5eb.pdf
    • http://mail.juliacdupuis.com/uploads/1/3/0/6/130603835/3197006.pdf
    • http://brentminehandesign.com/uploads/1/3/0/7/130776222/lerejeva_danegonidim_vabes_navebanaju.pdf
    • http://yourfashionfarmer.com/uploads/1/3/0/6/130620560/nuruxazugidirupumidu.pdf
    • http://pxd.heathermcclarriephotography.com/uploads/1/3/0/6/130639931/7640425.pdf
    • http://perthcards.com/uploads/1/3/0/6/130621215/bad5d625eea098.pdf
    • http://takemealong.org/uploads/1/3/0/3/130379741/7a4c5e30.pdf
    • http://csobecancour-en.com/uploads/1/3/0/2/130289347/wopakimivuzo.pdf
    • http://petahuk.store/uploads/1/3/0/6/130604350/muzoditujoku-kelujojupixoziw-mudajovo-gubukemo.pdf
    • http://yogavadhuta.com/uploads/1/3/0/6/130621276/kexufazusuloxezowa.pdf
    • http://assistancedogassociation.com/uploads/1/3/0/7/130739983/2382475.pdf
    • http://marthadoesnotlivehere.com/uploads/1/3/0/6/130604036/xejaneguwuwonok.pdf
    • http://akeiawellness.com/uploads/1/3/0/5/130589121/gowelijekogu.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_off0000692f.bin
249ca4bd172275c4317674af7f7fde2708c468e2e58248ff35d598866d219c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x692F 7988 bytes

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