Malicious PDF — malware analysis report

Static analysis result for SHA-256 1126da5fe3f4d5fa…

MALICIOUS

PDF

43.4 KB Created: 2020-03-23 04:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f563ba2d54f3f2e4fa6cc605a2f49fa4 SHA-1: ffebd3756fb21ddb9e4c17d1c47732a0f4250499 SHA-256: 1126da5fe3f4d5fa8091c29b2c7ee468162f9dc24bc9905272145a231312749b
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of numerous external URLs indicates an attempt to redirect the user to potentially malicious content or phishing sites.

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://clickinteriordesign.net/uploads/1/3/0/6/130605108/130605108.html#el+te+de+neem+sirve+para+adelgazar
    • http://theoperapreneur.com/uploads/1/3/1/0/131070238/gonebewodumiti.pdf
    • http://www.helpmedeb.com/uploads/1/3/0/6/130620233/57075fca68746.pdf
    • http://iwillriseandshine.com/uploads/1/3/0/6/130639768/refumadol.pdf
    • http://brushlove.ca/uploads/1/3/0/4/130489066/1615321.pdf
    • http://www.tukteacompany.com/uploads/1/3/0/6/130621202/gagaviribekofiroxe.pdf
    • http://bobbywayneclark.com/uploads/1/3/0/2/130289682/7d6bed1a3e.pdf
    • http://www.zootown.com/uploads/1/3/0/2/130288378/kuzala.pdf
    • http://www.superiorhomeinspectionrepair.net/uploads/1/3/0/4/130476447/bd46b81a696.pdf
    • http://the-solar-system.com/uploads/1/3/0/2/130270895/2c48310.pdf
    • http://attorneymarketing.club/uploads/1/3/0/6/130621354/69debbb6d9c2.pdf
    • http://www.glenlevenband.com/uploads/1/3/0/5/130539871/6168287.pdf
    • http://travisjonesaudio.com/uploads/1/3/0/4/130435596/3986562.pdf
    • http://mywiguide.com/uploads/1/3/0/8/130873971/zogarupamuwe_wokuzen.pdf
    • http://lamourstudio.com/uploads/1/3/0/6/130621114/vesepagimobox.pdf
    • http://alimamas.com/uploads/1/3/0/7/130776070/4409753.pdf
    • http://perfectlycomplicated.com/uploads/1/3/0/2/130270923/3acb91080b1e0b6.pdf
    • http://cowboysoriginals.com/uploads/1/3/0/7/130739573/d38a28dd927db.pdf
    • http://ohheglows.com/uploads/1/3/0/4/130483986/46ae8.pdf
    • http://carterracing83.com/uploads/1/3/0/7/130775594/jonowuzo_xuraminutunir_xobeki_gixumifar.pdf
    • http://crownrealestateholdingsllc.com/uploads/1/3/0/4/130483354/velazaju.pdf
    • http://clfiteart.com/uploads/1/3/0/5/130544390/gufoguwovetu-loxanewadesakuw.pdf
    • http://johnisnaked.com/uploads/1/3/0/4/130483429/2185222.pdf
    • http://www.yessilashstudios.com/uploads/1/3/0/8/130813840/6994356.pdf
    • http://starrehealing.com/uploads/1/3/0/3/130323190/bevoniz.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_off00007d5c.bin
47dfadd75fd1deb338f4971ddd103ed0b3055faf14443138aff0ad0747437159		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5C 9076 bytes

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