Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b27321eef7c93e…

MALICIOUS

PDF

38.4 KB Created: 2020-03-27 11:57:19 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9ee9ce81f40f7e422440402ef38d2c1b SHA-1: a0de77674096db5355d20f946f49ca8c7c50d6b1 SHA-256: 66b27321eef7c93ee6cde76357ba0b32a2c6548f78a0e23f261df17719b9d436
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a large number of external links, indicating a potential SEO link farm or a distribution point for further malicious content. The document body contains garbled text but also includes URLs that are likely part of the malicious infrastructure. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect users to potentially compromised or malicious websites.

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://somersetfoodtrail.org/uploads/1/3/0/3/130313405/130313405.html#numark+mixtrack+pro+2+price+in+nigeria
    • http://www.somethingblueresale.com/uploads/1/3/0/3/130323972/nagemu.pdf
    • http://alinoraboutique.com/uploads/1/3/0/5/130539734/0105e69ce8c7a.pdf
    • http://www.word-sculpting.com/uploads/1/3/0/4/130489410/5b39d016e81c.pdf
    • http://www.bahgear.com/uploads/1/3/0/6/130604310/zowowovaw_dezakivezor.pdf
    • http://fredastairedelaware.com/uploads/1/3/0/5/130550834/e477929d4ec758f.pdf
    • http://zstartrading.com/uploads/1/3/0/2/130287454/789825.pdf
    • http://iseeproperty.com/uploads/1/3/0/7/130776315/kajuje.pdf
    • http://brightpassiveincome.com/uploads/1/3/0/4/130435791/2532300.pdf
    • http://www.autorepair.us/uploads/1/3/0/6/130605270/e5fc702c3a0caa8.pdf
    • http://fueltherainbow.com/uploads/1/3/0/6/130639960/pavoxupelonu_gonumujob_mirinurejeto.pdf
    • http://imperialcoding.com/uploads/1/3/0/7/130739002/sizol.pdf
    • http://www.allsmallcreaturesvetclinic.com/uploads/1/3/0/6/130639166/6955614.pdf
    • http://www.tarryngodfrey.com/uploads/1/3/0/2/130271096/ac11499ef0.pdf
    • http://dirksimon.info/uploads/1/3/0/5/130541073/4215666ea74c59.pdf
    • http://susansgardenminipigs.com/uploads/1/3/0/6/130604495/119827caffa1b.pdf
    • http://raavirealestate.com/uploads/1/3/0/6/130603724/gakobasoto.pdf
    • http://prosetrywms.com/uploads/1/3/0/5/130588299/rimovebasebupimozel.pdf
    • http://goeswithmycouch.com/uploads/1/3/0/7/130775032/luxet_kakemafubalel.pdf
    • http://tri-citymutulwatercompany.com/uploads/1/3/0/5/130589010/d540c2edacb3b83.pdf
    • http://thomasbullard.com/uploads/1/3/0/6/130621470/19b87d61e78871.pdf
    • http://www.israelitesunite.com/uploads/1/3/0/2/130271017/6607902.pdf
    • http://growingseedsphx.org/uploads/1/3/0/6/130620530/gubegajegalag-pakejizez.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_off00006a78.bin
b5921a4a6d290a015348021b217c40dc72b7bff2f9d205f5d09349104a0c5993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A78 8128 bytes

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