Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaedbc013a30e955…

MALICIOUS

PDF

57.3 KB Created: 2020-05-20 03:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 44117c95f79ff319eecfde3c53989c84 SHA-1: 8796273a20093f44a39e6da5df0b4565f5af330b SHA-256: eaedbc013a30e955af8ce9d2a675ada7334af2003badfb4e9a7e00b4fcba2a0f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO poisoning tactic. The document body contains a reference to 'Gloomhaven scoundrel character sheet', which is likely a lure to encourage users to click the malicious links. No scripts were extracted from this sample.

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://shuhanfan.com/uploads/1/3/1/3/131379255/131379255.html#gloomhaven+scoundrel+character+sheet PDF link annotation
    • http://hairbytaylorjandre.com/uploads/1/3/1/6/131606509/5206765.pdfIn PDF document text
    • http://islandjacksrentals.com/uploads/1/3/0/4/130483109/tifizakiviluz-vikulap-zojamaxelo.pdfIn PDF document text
    • http://conexioroma.com/uploads/1/3/0/5/130588478/suvorejogojuzi.pdfIn PDF document text
    • http://creativoconsulting.com/uploads/1/3/0/7/130775698/1542335.pdfIn PDF document text
    • http://m3roofing.com/uploads/1/3/1/8/131858044/sowisefidow.pdfIn PDF document text
    • http://sc-rea.com/uploads/1/3/0/3/130323116/rafaxuxegog.pdfIn PDF document text
    • http://tahealhoom.com/uploads/1/3/0/5/130589229/9249917.pdfIn PDF document text
    • http://earthlydifference.com/uploads/1/3/0/7/130776101/kurepotezurem-godejagibare-gomikewuw-sajegowulik.pdfIn PDF document text
    • http://rebeccaharrisbooks.com/uploads/1/3/0/5/130539203/5908148.pdfIn PDF document text
    • http://divinelove.ca/uploads/1/3/0/6/130622051/2b62ae2a3de.pdfIn PDF document text
    • http://hahahairapedyou.com/uploads/1/3/0/6/130639867/b1b011ed.pdfIn PDF document text
    • http://almostheavenphotos.com/uploads/1/3/0/4/130477633/jetaxisixelesixekote.pdfIn PDF document text
    • http://explorebatangas.com/uploads/1/3/0/4/130435929/3d486ca410a.pdfIn PDF document text
    • http://nvintl.com/uploads/1/3/0/4/130488631/tupupejinev_vonavesafumuvu_xixubiguzosa.pdfIn PDF document text
    • http://laestadiusconsulting.com/uploads/1/3/1/3/131383207/bafenubifib.pdfIn PDF document text
    • http://the-lifechurch.org/uploads/1/3/1/4/131437532/fbd7aeb327.pdfIn PDF document text
    • http://honeyscrubsnstuff.net/uploads/1/3/0/7/130739220/sefoj-loduboxabi.pdfIn PDF document text
    • http://gohi.eu/uploads/1/3/0/6/130620811/9379089.pdfIn PDF document text
    • http://jamesgaypersonalinjurylaw.com/uploads/1/3/0/3/130313702/wadelopivivifire.pdfIn PDF document text
    • http://ardsleylatin.org/uploads/1/3/1/6/131637099/4298459.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 3

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_off0000b430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB430 11172 bytes
SHA-256: 0cba029bedc2cb134b639c5ace8629754e85f9c3a1ebebdd17464f2b27980482

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