Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e62aab67932e3fd…

MALICIOUS

PDF

38.5 KB Created: 2020-05-21 11:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0725afd66bac5cbe0817e606666803b4 SHA-1: 3923f8b17f8ff62c9fab42c746588270bc7510ae SHA-256: 6e62aab67932e3fde44a5d036b12963fcd473072ae33eff8a51a7416b76f648d
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO abuse tactic. The document body mentions "Pokemon emerald save editor" to potentially lure users. While no scripts were directly extracted, the PDF structure and the presence of embedded URIs indicate a malicious intent to redirect users to potentially harmful content.

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://inarq.net/uploads/1/3/0/5/130551182/130551182.html#pokemon+emerald+save+editor
    • http://melanieartist.com/uploads/1/3/0/6/130639729/moxux-vozitire-gipazawovikerub-gutasixe.pdf
    • http://covingtoncultureclub.com/uploads/1/3/0/6/130639140/sogub.pdf
    • http://fresnocheaptowing.com/uploads/1/3/1/4/131453907/8343d516a982.pdf
    • http://pranayogawellness.org/uploads/1/3/1/3/131379168/64da852a438623.pdf
    • http://kitecollection.com/uploads/1/3/1/4/131411539/nipebo.pdf
    • http://bravearkitektkontor.com/uploads/1/3/0/8/130874082/5b20df4d.pdf
    • http://olemissgirlsturn40.com/uploads/1/3/1/3/131379118/8db810.pdf
    • http://covedemond.org/uploads/1/3/1/4/131438062/5247403.pdf
    • http://proteamworksdev.com/uploads/1/3/1/4/131406104/wenid.pdf
    • http://welldonecommercialcleaning.net/uploads/1/3/0/6/130603861/6254309.pdf
    • http://littlebabybunting.com/uploads/1/3/0/7/130740340/fikixopepasived.pdf
    • http://classicated.com/uploads/1/3/0/7/130739131/eb67c73dc34.pdf
    • http://petscertification.com/uploads/1/3/0/4/130435562/tikezisewijope.pdf
    • http://investinorangecounty.com/uploads/1/3/1/4/131437025/pofiborubuzu.pdf
    • http://chilledinafieldfestival.com/uploads/1/3/0/4/130435846/tenegimomurode.pdf
    • http://elsohly.net/uploads/1/3/0/6/130640110/9052116.pdf
    • http://millerplumbingandbackflow.net/uploads/1/3/0/6/130603851/fomagirogexazibos.pdf
    • http://movecomputing.net/uploads/1/3/0/5/130589054/biruk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000665a.bin
471edff87eaf619b1e044ea33c389042d1b36beb9e1ff63f76047f464bd83b4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 12144 bytes

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