Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a32d7658f08aa1…

MALICIOUS

PDF

40.5 KB Created: 2020-04-02 04:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7465a10063d150c9b8896cbb848c8cd2 SHA-1: f91f90f161bb04a1ad2ec80c4f662a97a3d6c110 SHA-256: 62a32d7658f08aa1fb4750e73d56186e6a9b25f87217c5ad0ea43ea3d2432af5
96 Risk Score

Malware Insights

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

This PDF file was flagged by an ML classifier as malicious. It contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The document body contains garbled text but also includes URLs that are likely part of this link farm. No scripts were extracted, but the sheer volume of external links suggests a malicious intent to drive traffic or host further 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://nativitybloomingtonparish.org/uploads/1/3/0/8/130815026/130815026.html#gold%27s+gym+stride+trainer+300
    • http://kvpafrica.com/uploads/1/3/0/5/130542907/ebe0cd042.pdf
    • http://acasey2.xyz/uploads/1/3/0/9/130969679/2405071.pdf
    • http://wwgoogetransport.com/uploads/1/3/0/2/130288465/mexukuti-riliwi-bibexu-gedowitejodosij.pdf
    • http://ctrventures.net/uploads/1/3/0/5/130589098/jalibefosepa-magevugidori.pdf
    • http://www.nyclanguageinstitute.com/uploads/1/3/0/5/130544781/dbfc8d4193.pdf
    • http://nancinilles.com/uploads/1/3/0/4/130477372/92d20.pdf
    • http://isofoot.net/uploads/1/3/0/5/130539800/7620ba0a1c6.pdf
    • http://wecancenters.com/uploads/1/3/0/3/130313159/bisobi.pdf
    • http://alluringwonders.com/uploads/1/3/0/6/130621279/0999c04ff18e4.pdf
    • http://speedyprocess.net/uploads/1/3/0/3/130312998/dalonavotufome-tavefatosegawo-pifupa.pdf
    • http://hostmaster.ircstartup.ch/uploads/1/3/0/7/130776457/fc22309444.pdf
    • http://mountainmadebaby.com/uploads/1/3/0/4/130477110/mekolabin.pdf
    • http://wdcontractinginc.com/uploads/1/3/0/2/130289746/fc9046e36219.pdf
    • http://msusnackbox.com/uploads/1/3/0/5/130539188/1728781.pdf
    • http://countrysheakandboutique.com/uploads/1/3/0/3/130323573/nubefoletijob_wapukaravaki_kotavelididuvi_fawaxipixe.pdf
    • http://projectmakeadifference.net/uploads/1/3/0/7/130738854/5637504.pdf
    • http://newleafdentalcare.net/uploads/1/3/0/2/130272856/58fbefd239019c6.pdf
    • http://hecoma.de/uploads/1/3/1/1/131163841/tesoroniv.pdf
    • http://nemographics.com/uploads/1/3/0/5/130588357/085f03d4.pdf
    • http://thesoutherngothiccollective.com/uploads/1/3/0/9/130969089/togivoluxonofudi.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_off00007450.bin
6f073e4c32ebcbd9fbc2452bcd6720f0ef241ba21e3f8b984ee1abe97987442e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7450 8356 bytes