Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e11c10b3f6d3154…

MALICIOUS

PDF

41.6 KB Created: 2020-03-12 05:54:01 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: cd2df080564c242ebb44e671830c4ee8 SHA-1: e4ad6053ce05f63f5058bec7f380dea28a92b87a SHA-256: 7e11c10b3f6d3154fe5ec7f65eb8db2f35d47f12408b67257a36feffc55bb3a7
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 to other PDF files hosted on various domains, indicating a link farm or a distribution mechanism for further content. The ML classifier strongly flagged this sample as malicious, and the presence of numerous external URIs supports this assessment. No scripts were extracted, but the document's structure and embedded links suggest it is designed to redirect users to potentially harmful content.

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://seafoodfestivalgiveaways.com/uploads/1/3/0/6/130620249/130620249.html#umbrella+academy+comic+vs+tv+series PDF link annotation
    • http://sciencesmartssociety.org/uploads/1/3/0/6/130604934/2f4ea0ca6.pdfIn PDF document text
    • http://casagallegaavenidas.com/uploads/1/3/0/6/130639877/zevalaxeni-fuxuponi.pdfIn PDF document text
    • http://startuphusle.com/uploads/1/3/0/7/130739745/timikaxivebavab_fewurovisi_vakukosimeki.pdfIn PDF document text
    • http://nashvilledancecooperative.net/uploads/1/3/0/6/130621746/8699174.pdfIn PDF document text
    • http://ilafayette.net/uploads/1/3/0/6/130604336/robuzerugava.pdfIn PDF document text
    • http://www.landscapedesign360.com/uploads/1/3/1/0/131069806/125692d4dadf.pdfIn PDF document text
    • http://scdelongsales.com/uploads/1/3/0/7/130738861/wuwata.pdfIn PDF document text
    • http://www.kristinerinartistry.com/uploads/1/3/0/6/130620619/d6c91c6348692d4.pdfIn PDF document text
    • http://artbyemmi.com/uploads/1/3/0/5/130551641/5701558.pdfIn PDF document text
    • http://www.kathrynmckirahan.com/uploads/1/3/0/7/130739875/780484095.pdfIn PDF document text
    • http://rbuels.net/uploads/1/3/0/3/130323516/1064061.pdfIn PDF document text
    • http://hummingbirdhairstyles.com/uploads/1/3/0/6/130604690/bitebupavex.pdfIn PDF document text
    • http://idctechcore.com/uploads/1/3/0/4/130488220/f0249104bd.pdfIn PDF document text
    • http://www.westlakespeech.com/uploads/1/3/0/2/130272336/c9ce4969.pdfIn PDF document text
    • http://votepolzin.com/uploads/1/3/0/4/130479389/mekufuban.pdfIn PDF document text
    • http://ubaentertainment.com/uploads/1/3/0/4/130477090/2425495.pdfIn PDF document text
    • http://www.ljrev.com/uploads/1/3/0/2/130289738/900023708dfc.pdfIn PDF document text
    • http://insitesafety.com/uploads/1/3/0/5/130542922/191574.pdfIn PDF document text
    • http://zonemaster.nihaoruinen.nl/uploads/1/3/0/9/130969682/pojoku.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

Related samples 4

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_off00007a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A74 8056 bytes
SHA-256: 9a26ad49eb24641bfc1aab214675748258e82acea366e62810eb8226be848ebd

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