Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ca770fd8fe9a22…

MALICIOUS

PDF

53.4 KB Created: 2020-03-27 03:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 9338cae470829f8785831e164615e70f SHA-1: 2075f1b9d9d516cf7c3d01e342bc4d7a21615c36 SHA-256: c8ca770fd8fe9a226ab162169d0d8aa6c7ffd606ad8d79e4a676c29981dd30a3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body contains a reference to 'Armar pc gamer' and the authoring application 'wkhtmltopdf', which may be part of a lure. No scripts were extracted from this sample.

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://nofone.net/uploads/1/3/0/2/130291592/130291592.html#armar+pc+gamer PDF link annotation
    • http://hylanheathcare.com/uploads/1/3/0/6/130639997/xugifomigiraz_takojaponitugu_fabosonefakav.pdfIn PDF document text
    • http://www.bridgefitnesscambridg.com/uploads/1/3/0/5/130588270/314698.pdfIn PDF document text
    • http://www.emily--cooper.com/uploads/1/3/0/8/130813972/xufoxowoseno-kedorusagivuxon.pdfIn PDF document text
    • http://thelazarusrite.net/uploads/1/3/0/5/130545998/gasov.pdfIn PDF document text
    • http://www.leannejohnston.com/uploads/1/3/0/6/130605017/6279922.pdfIn PDF document text
    • http://www.prettymehood.com/uploads/1/3/0/4/130489467/pomusuwedi_roweduneb_pisaromapal_jojininojafobe.pdfIn PDF document text
    • http://www.countyvethosp.com/uploads/1/3/0/9/130969238/rafotulunodikarerit.pdfIn PDF document text
    • http://aforeverpawprint.com/uploads/1/3/0/7/130776026/biloxasozasivetaz.pdfIn PDF document text
    • http://mail.noassemblyrequiredsd.com/uploads/1/3/0/5/130546000/sowutosuja.pdfIn PDF document text
    • http://flavorfulhoney.com/uploads/1/3/0/5/130551957/wokibo-difivixa.pdfIn PDF document text
    • http://margaretgriffithjewellery.com/uploads/1/3/0/4/130478163/bac4c.pdfIn PDF document text
    • http://momentcapture.net/uploads/1/3/0/6/130639528/pukepiki.pdfIn PDF document text
    • http://www.asherlabradors.com/uploads/1/3/0/6/130622005/839ebae45649.pdfIn PDF document text
    • http://shineonma.com/uploads/1/3/0/3/130379549/fumanutekaxapovej.pdfIn PDF document text
    • http://5425ameliaearhartdr.com/uploads/1/3/0/7/130739142/6871116.pdfIn PDF document text
    • http://rosadosastros.com/uploads/1/3/0/6/130620343/bupibaxixufotow.pdfIn PDF document text
    • http://kakadakhornblogs.com/uploads/1/3/0/7/130775434/kotonel-nifevegapukeb-pogifar.pdfIn PDF document text
    • http://specifyallproof.com/uploads/1/3/0/3/130323207/dudeneremivog.pdfIn PDF document text
    • http://www.happyherbivorelife.com/uploads/1/3/0/4/130483480/75f8deead268ec.pdfIn PDF document text
    • http://ceasefirebusinessassociates.com/uploads/1/3/0/4/130435791/witevibepej.pdfIn PDF document text
    • http://angelahardison.online/uploads/1/3/0/6/130620282/6805814.pdfIn PDF document text
    • http://www.gohumani.net/uploads/1/3/0/7/130775341/popemifepune_jimejugofip.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a43b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA43B 9608 bytes
SHA-256: 749baeb3bb786704935eedbce014c6b58eca01371f6bd74756f93a0c90d6c52f

Open this report in the interactive analyzer, or submit your own file for analysis.