Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec622d9019458cd…

MALICIOUS

PDF

35.1 KB Created: 2020-06-04 21:07:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 526a197b4d6ec1f2675573f5c18d9d96 SHA-1: 1c7be24899cfce0e667412f0ca1aea1fde340095 SHA-256: 7ec622d9019458cde861f10f4ddfe1bd5e489042f822515c1d5880eb102f394e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, identified as a link farm, which is a common tactic for SEO manipulation or distributing malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous external URLs suggests an attempt to redirect the user to potentially harmful sites. No scripts were extracted, but the overall structure and heuristic firings point to a malicious PDF designed to lead users to external resources.

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://teammojo.pink/uploads/1/3/2/3/132302833/132302833.html#read+the+death+of+grass+online PDF link annotation
    • http://houseforsalellc.com/uploads/1/3/0/6/130604632/rasenibuluwup.pdfIn PDF document text
    • http://gcpottswelding.com/uploads/1/3/0/5/130542953/tagabal.pdfIn PDF document text
    • http://godscreationsjewelers.co/uploads/1/3/1/4/131437106/lakusegafulek.pdfIn PDF document text
    • http://eosfinancialplanning.com/uploads/1/3/1/8/131857057/javifipu.pdfIn PDF document text
    • http://cbdproductsusa.org/uploads/1/3/0/9/130969298/680b4.pdfIn PDF document text
    • http://aboriginalart.services/uploads/1/3/1/4/131438091/3016462.pdfIn PDF document text
    • http://ucsconstructionsllc.com/uploads/1/3/1/6/131637649/muvebarala_dimumeg.pdfIn PDF document text
    • http://rcmarketingonline.com/uploads/1/3/0/2/130291491/saforitusuximajabiji.pdfIn PDF document text
    • http://teammojo.pink/uploads/1/3/2/3/132302833/terms.htmlIn PDF document text
    • http://teammojo.pink/uploads/1/3/2/3/132302833/dmca.htmlIn PDF document text
    • http://teammojo.pink/uploads/1/3/2/3/132302833/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://napipivo.files.wordpress.com/2020/06/zonebulugeduxeveboxopetuz.pdfIn PDF document text
    • https://gagonulo.files.wordpress.com/2020/06/24038905498.pdfIn PDF document text
    • https://tokisize.files.wordpress.com/2020/06/rujasogulepen.pdfIn PDF document text
    • https://polazukewex972860323.files.wordpress.com/2020/06/vitilivumogegafados.pdfIn PDF document text
    • https://tezufaxaji.files.wordpress.com/2020/06/damenak.pdfIn PDF document text
    • https://wekujepomope.files.wordpress.com/2020/06/86642482501.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 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6035 9548 bytes
SHA-256: e069d04d049d8515b873c16b71cd04fb047706a20e356c243e980eecffee962f

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