Malicious PDF — malware analysis report

Static analysis result for SHA-256 8601a9c2074d9e9f…

MALICIOUS

PDF

39.2 KB Created: 2020-03-16 04:00:46 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d2922323514a181d25515e68f92b1d9b SHA-1: 5f6532166e0f10007c2fd40c4253c40b6d8a1d85 SHA-256: 8601a9c2074d9e9fd02946a26a31185771e86bfac71c83742b21c83930d267b5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of external links, indicating a link farm or redirection to malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest the document is designed to redirect users to potentially harmful content hosted on various domains.

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://yghu17.bdgct.com/uploads/1/3/0/4/130488382/130488382.html#android+sqlite+alter+table+add+column+after
    • http://boylangroup.info/uploads/1/3/0/5/130588279/vumux.pdf
    • http://desskuytuch.com/uploads/1/3/0/2/130291591/1767569.pdf
    • http://westernchauvinist.com/uploads/1/3/0/3/130313081/9704739.pdf
    • http://joy-coach.com/uploads/1/3/0/2/130289729/kimovevejukege.pdf
    • http://www.thezebrawall.com/uploads/1/3/0/3/130323315/rofusezop_zemonavagene_ruroxubukotuvo.pdf
    • http://solverbi.com/uploads/1/3/0/7/130738603/bewil.pdf
    • http://ukatch.com/uploads/1/3/0/6/130620667/lugebizavi.pdf
    • http://brownfencing.com/uploads/1/3/0/6/130605186/xolubovi-sejifamoseju.pdf
    • http://oasisdanceproject.com/uploads/1/3/0/2/130289271/9e7173243f9.pdf
    • http://jf-datatechniek.com/uploads/1/3/0/5/130589429/178399654.pdf
    • http://mta-sts.mail.robertsfir.org/uploads/1/3/0/5/130589302/mebobawa.pdf
    • http://www.viceversafashions.com/uploads/1/3/0/6/130620561/7787652.pdf
    • http://www.southernheritagewoodwork.com/uploads/1/3/0/5/130551599/c4415.pdf
    • http://www.littlepigsbbqjoplin.com/uploads/1/3/0/4/130488935/3266630.pdf
    • http://blazerman.com/uploads/1/3/0/2/130272372/lutif-zagiket-nurituz-sejevusaruzejo.pdf
    • http://pickapearl.co.uk/uploads/1/3/0/4/130483842/0894592353fb.pdf
    • http://louisewisechild.com/uploads/1/3/0/9/130969790/0905bebf.pdf
    • http://degerbygille.fi/uploads/1/3/0/6/130603725/bazedinobiporejosasa.pdf
    • http://merryvillemuseum.com/uploads/1/3/0/8/130813846/xutege_sewamexop_pesukedobozato.pdf
    • http://karolinagoldjrecords.com/uploads/1/3/0/2/130272352/wonedukitawovubive.pdf
    • http://austinbellconsulting.com/uploads/1/3/0/2/130288551/8cf00ce0ce.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_off00007101.bin
3833fc63bc3f81b8784ad3c52d2aca412de5146de997127d3edd2ea163a89a1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7101 7772 bytes

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