Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c014c0dcb041c85…

MALICIOUS

PDF

85.9 KB Created: 2020-03-24 07:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 08ce35567381e826634826f528cb89b3 SHA-1: be31f2892f97704d770db8405b7437f72ed6bc83 SHA-256: 4c014c0dcb041c856fc5428aff0ac2ae6b0361852ad38411f19e421f191dd3d0
94 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam or phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links pointing to domains like 'education-mindset.ca', suggesting an attempt to manipulate search engine results or redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains a URL that mirrors one of the extracted links, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://bshppopup.com/uploads/1/3/0/2/130272940/130272940.html#ayn+rand+fountainhead+book+in+telugu
    • http://education-mindset.ca/uploads/1/3/0/2/130272080/fonolelatunonugopu.pdf
    • http://hikonnect.com/uploads/1/3/0/7/130739322/zavak_mubavo_vosopijivabex.pdf
    • http://dubinmarketingstrategies.com/uploads/1/3/0/6/130620439/vezuzalovojiko_guruze_fuvadupurawu.pdf
    • http://www.shoppedit.com/uploads/1/3/0/2/130289563/xesobirutogozekep.pdf
    • http://saritelpner.com/uploads/1/3/0/5/130551907/1029213.pdf
    • http://auntjackiehair.com/uploads/1/3/0/4/130488387/rapozixirigev_nafugadobidiwu_kubaxa_walomupeso.pdf
    • http://omazicwatches.com/uploads/1/3/1/1/131163878/4441728.pdf
    • http://metasurveying.com/uploads/1/3/0/8/130874289/c9353df2.pdf
    • http://deanvukelicstonemason.com/uploads/1/3/0/5/130589159/e064c360194c.pdf
    • http://romhs.com/uploads/1/3/0/6/130604251/famaminibovuvimubiv.pdf
    • http://marzie.net/uploads/1/3/0/9/130969236/bejokom-vasif-venozirituwab-dutubipas.pdf
    • http://a1315771xstreamtravel.xsideas.com/uploads/1/3/0/8/130874554/e37bcd1cacb2.pdf
    • http://republicamultimedia.org/uploads/1/3/0/7/130775201/4661478.pdf
    • http://surfacepros.online/uploads/1/3/0/7/130739781/vomotigupatolutaj.pdf
    • http://mail.mariacfox.com/uploads/1/3/0/6/130605164/rudezo-jatufobuvexu-sutez-zasavezukar.pdf
    • http://brightriverpgh.com/uploads/1/3/0/2/130289796/4965845.pdf
    • http://tamalesdemeza.com/uploads/1/3/0/5/130540525/a1767c596a.pdf
    • http://myanmarshippingsolutions.com/uploads/1/3/0/8/130814535/5946220.pdf
    • http://mta-sts.mx.cbisociety.org/uploads/1/3/0/3/130313150/lanoliw_xifevudapal.pdf
    • http://valleyridgeorganics.org/uploads/1/3/0/2/130270912/nafuwobuf-lafaxegef.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_off00012690.bin
38229a3ef7fcd445106800fba2367bd8ceed7674363a4fe5f4960cd3e0350d3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12690 9580 bytes

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