Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffaa6e6f66d4d68…

MALICIOUS

PDF

39.3 KB Created: 2020-06-04 00:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 0ddeaa37045a6752c858841895cd1c1a SHA-1: ea2ea87c857330f9c9770e0141d6b61b9eb8e308 SHA-256: 3ffaa6e6f66d4d6801e2506137575ca4e2eee81f2c23565adb4fad853030d59c
104 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 hosted on domains that appear to be part of a link farm. The document body text, though heavily obfuscated, contains references to movie downloads, suggesting a lure to entice users to click on these malicious links. The presence of a 'Download Button' heuristic further supports this attack pattern. The primary intent appears to be directing users to potentially malicious websites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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
  • 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://kalajarvenlomakyla.fi/uploads/1/3/0/7/130740212/130740212.html#kala+patthar+full+movie++480p+filmyw PDF link annotation
    • http://lifeinthedadlane.com/uploads/1/3/1/4/131412032/401d4ac.pdfIn PDF document text
    • http://webmail.luzcarmenboutique.com/uploads/1/3/0/2/130272364/105b4d6235e.pdfIn PDF document text
    • http://nvnv-sese.com/uploads/1/3/1/0/131070491/968b3db.pdfIn PDF document text
    • http://gamingshopaccount.com/uploads/1/3/1/8/131856987/5892619.pdfIn PDF document text
    • http://devicekrypt.com/uploads/1/3/0/5/130588299/xupafumudamar.pdfIn PDF document text
    • http://internationalsharedknowledge.com/uploads/1/3/0/5/130543035/kokew-vamipuruwili.pdfIn PDF document text
    • http://rockymountainpaintingcompany.com/uploads/1/3/0/3/130379104/8582432.pdfIn PDF document text
    • http://mzoresources.com/uploads/1/3/0/6/130605403/bosabetejixofedagu.pdfIn PDF document text
    • http://kalajarvenlomakyla.fi/uploads/1/3/0/7/130740212/terms.htmlIn PDF document text
    • http://kalajarvenlomakyla.fi/uploads/1/3/0/7/130740212/dmca.htmlIn PDF document text
    • http://kalajarvenlomakyla.fi/uploads/1/3/0/7/130740212/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://sawowutiv.files.wordpress.com/2020/06/29338988237.pdfIn PDF document text
    • https://dikajawu.files.wordpress.com/2020/06/72334399844.pdfIn PDF document text
    • https://zutabav590496275.files.wordpress.com/2020/06/64284487884.pdfIn PDF document text
    • https://wupefosa.files.wordpress.com/2020/06/22786807732.pdfIn PDF document text
    • https://bovurejevo984565953.files.wordpress.com/2020/06/94410435374.pdfIn PDF document text
    • https://somipejema.files.wordpress.com/2020/06/41693398575.pdfIn PDF document text
    • https://towawak.files.wordpress.com/2020/06/28746751814.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58AF 2276 bytes
SHA-256: bad47d694a1dd9c664d92593e9aa530dcfdac95caf8f68d8ad6f6049d2ff5117
font_01_sfnt_off0000627b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627B 11068 bytes
SHA-256: e0e206e4b21e5bbb71541f93fe12d81856585b1ed005b5ec0d0aeb35d36a7f1b
font_02_sfnt_off00008819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8819 2056 bytes
SHA-256: e56f5db8faf554166087922806b3819c377976d94af14c6b8a512386de68c265

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