Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c0bf73cde21cfb…

MALICIOUS

PDF

34.7 KB Created: 2020-04-09 08:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d9dfe02e0d809f9335040b50c0475da1 SHA-1: 9fd37ba86a347eac77d45ef64838f8594fa6c19b SHA-256: e7c0bf73cde21cfb61230b68bd9a52b45e6240d2fc776f7f5c12f6d83cbb6d29
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO spam tactic. The document body text and embedded URLs attempt to lure users by referencing 'love rosie full movie online with english subtitles', directing them to click on numerous suspicious URLs. The ML classifier strongly indicated maliciousness, and the PDF structure with mass external links is a known technique for distributing malicious 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://smbrandmgt.com/uploads/1/3/0/2/130270745/130270745.html#love+rosie+full+movie+online+with+english+subtitles
    • http://kythuatinan.com/uploads/1/3/0/6/130621036/vebivibamakoseru.pdf
    • http://74-123-76-117.mgwnet.com/uploads/1/3/0/5/130546333/gawov.pdf
    • http://alloexo.website/uploads/1/3/0/5/130588858/2309928.pdf
    • http://citycentercounseling.com/uploads/1/3/1/0/131070602/7255337.pdf
    • http://letsgollc.com/uploads/1/3/0/5/130588173/xupitorupaz_kakolabut_febajife.pdf
    • http://course-group.com/uploads/1/3/0/2/130289625/faxexi_tobakeb.pdf
    • http://rebeccalmontgomery.com/uploads/1/3/0/7/130776687/dojuzidapavemajamim.pdf
    • http://rentopiaeventrentals.com/uploads/1/3/0/7/130776269/8590837.pdf
    • http://stilles-sein.at/uploads/1/3/0/6/130621732/lininezefafaku_poralafonedudot_sapojo.pdf
    • http://ladispensarys.com/uploads/1/3/1/4/131438110/504528.pdf
    • http://hopeshouseresale.com/uploads/1/3/1/4/131482823/9dacc0d.pdf
    • http://zeroworkout.com/uploads/1/3/0/9/130970012/vurimasedilakebote.pdf
    • http://tzivelek.com/uploads/1/3/0/7/130776808/9802371.pdf
    • http://thetampaimplantplace.com/uploads/1/3/0/2/130271015/a100eaa93a9940.pdf
    • http://recoveryrefuge.com/uploads/1/3/0/5/130590191/lubawuj.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_off00005e99.bin
c2c824694fee42c4cae8b30985b62c79b268c984d8273b40fc1d17224085bf1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E99 7832 bytes

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