Malicious PDF — malware analysis report

Static analysis result for SHA-256 5150c95c565341b3…

MALICIOUS

PDF

64.1 KB Created: 2020-06-05 07:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed84692c5052c7d3d48d58c980ca47e3 SHA-1: 606f349c8012e2c9ddb4c8a42d874613077365ab SHA-256: 5150c95c565341b3e33b37bc8ba40111eab212ac1862fb368ba54f0247eed088
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a lure related to '50 shades of darker full movie in hi', directing the user to click on an external URL. This URL, along with numerous others found in the PDF, points to domains that appear to be part of a link farm designed to distribute malicious content. The ML classifier strongly indicated maliciousness, and the PDF structure with mass external links supports a phishing or redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://74-123-77-132.mgwnet.com/uploads/1/3/0/7/130775346/130775346.html#50+shades+of+darker+full+movie+in+hi
    • http://umojacorpfunding.store/uploads/1/3/0/4/130483178/8ec38aad12a12.pdf
    • http://nebraskachambers.org/uploads/1/3/1/4/131407521/wokabebejanote_xowuxuz.pdf
    • http://mindforyouth.org/uploads/1/3/1/0/131071249/ecc11b9d5033.pdf
    • http://74-123-77-132.mgwnet.com/uploads/1/3/0/7/130775346/terms.html
    • http://74-123-77-132.mgwnet.com/uploads/1/3/0/7/130775346/dmca.html
    • http://74-123-77-132.mgwnet.com/uploads/1/3/0/7/130775346/policy.html
    • https://xidamorom.files.wordpress.com/2020/06/56096870802.pdf
    • https://mazewakipu.files.wordpress.com/2020/06/lizuzukisefofakonu.pdf
    • https://pewinutol.files.wordpress.com/2020/06/74418237385.pdf
    • https://dojujakukaj.files.wordpress.com/2020/06/pofijifasufekox.pdf
    • https://kudivex.files.wordpress.com/2020/06/kisalad.pdf
    • https://purekekimol.files.wordpress.com/2020/06/61934293312.pdf
    • https://kobutow.files.wordpress.com/2020/06/23337569577.pdf
    • https://fewufutuwoz.files.wordpress.com/2020/06/wefofu.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_off0000c005.bin
33af44a482528933a3c2557e5eb647acf87c7d6730758eb8bf40248a8054413e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC005 24200 bytes

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